Introduction and details of finless porpoise

Appearance characteristics: finless porpoise looks like a fish, with a body length of 1.2~ 1.6 meters. It is gray and black, with a short head, a slightly convex forehead, small eyes, a flat tail, no dorsal fin, and rarely jumps out of the water, only its back is exposed on the river.

The finless porpoise is leaden or grayish white. It's less than 1000. Body length is about 125~ 190 cm, body weight is 100~220 kg, head is blunt and round, and forehead slightly protrudes forward; The finless porpoise's head is very short, almost round, its forehead protrudes slightly forward, its mouth and nose are short and wide, its upper and lower jaws are almost the same length, and its mouth and nose are short and wide. The teeth are short and flat and shovel-shaped. Eyes are small and inconspicuous. The first five cervical vertebrae healed, and the number of ribs was usually 14 pairs. The middle part of the body is the thickest and the cross section is approximately circular. There is no dorsal fin on the back, and the flippers are large, triangular and sharp at the end, which is about one-sixth of the body length. Use five fingers. The caudal fin is large and divided into two pieces, which are horizontal. The horizontal width of the two tail leaves is about a quarter of the body length. There are obviously raised fins on the caudal fin at the back, and there should be dorsal fins, skin bulges with a width of 3~4 cm, and many horny scales. The whole body is bluish gray or tile gray, the abdomen is light and bright, the lips and throat are yellow gray, and there are some irregular gray spots on the abdomen. Some individuals have red flippers on their abdominal surfaces, especially during the breeding season. Their body color will not turn black until they die.

The two finless porpoises playing in the water, like other small whales, are more introverted than dolphins and are not easy to be found.

Finless porpoises in different regions have different personalities (for example, those living in Hong Kong are more afraid of humans). In some places, finless porpoises will take the initiative to swim with the boat, but most finless porpoises are afraid of the boat and will not go near it.

Finless porpoises mainly eat fish, but they also eat shrimp and squid.

Yangtze finless porpoise is the only freshwater finless porpoise subspecies in the world, which has lived on the earth for 25 million years. Known as the "living fossils" and "giant pandas in water" of the Yangtze River ecology, they are only distributed in the middle and lower reaches of the Yangtze River, Dongting Lake and Poyang Lake. Finless porpoises usually live in the waters bordering fresh water in Yuxian County, and can also live in the fresh water downstream of large and small rivers. Finless porpoises like to act alone, sometimes forming small groups of 2~3. But there are also 87 records in total. The finless porpoise has a wide range of feeding habits, mainly fish, but there are also non-fish such as shrimp and cephalopods. The finless porpoise can emit two kinds of sound signals. High-frequency pulse signal consists of a series of single high-frequency narrow pulses, which are generally 20 echolocation signals, and are mainly used in detecting environment and predation. The low frequency continuous signal is a time continuous signal. Because of the different frequencies, some people's ears sound like sheep barking, while others sound like birds. Basically, I don't get along with the baiji, and occasionally I play together. The finless porpoise can adapt to a wide range of water temperatures, and can live normally from 4℃ to 20℃. It is lively, often running up and down in the water, and its body keeps rolling, jumping, nodding, spraying water and suddenly turning. When swimming sideways, a leaf of the caudal fin emerges from the water, swings left and right, and crosses in the air. Swim quickly after being frightened, and then fly once or several times in a row, most of which are out of the water, only the tail leaves slide forward in the water, and occasionally the whole body jumps out of the water, reaching a height of 0.5 meters. When swimming upright, two-thirds of the body is exposed to water, and the posture perpendicular to the water surface can last for several seconds.

Atlas of finless porpoises Whenever there is a big ship sailing in the river, finless porpoises like to follow the top waves or ride the wind and waves. It will also make interesting spitting behavior, stick its head out of the water, swim forward quickly, close its mouth one by one, and squirt water from its mouth from time to time, sometimes 60~70 cm away. When breathing, only the head is exposed, the tail fin is hidden under the water, and then dives into the water like a bounce. The breathing interval is usually around 1 minute, but if you are frightened, you can dive for 8~9 minutes. Generally, you don't bow when you enter the water, and you won't stay underwater for a long time. However, when you dive, your bow is very large, indicating that you dive deeply and won't come out continuously. When swimming downstream, the next exit position is generally about 10 meters before the previous exit position, and when swimming downstream, it can only advance about 3 meters when reaching the previous exit water level.

If windy weather is about to happen, the finless porpoise's breathing frequency will be accelerated, it will be very high out of the water, and most of its head will stick out against the wind. Fishermen working on the Yangtze River call this behavior "worshipping the wind". This may be because the air pressure was low before the weather changed, so it had to increase the breathing frequency to get enough oxygen. Its food includes herring, tamarind, eel, perch, silver carp, whitebait, shrimp, squid and other fish. It changes with the different environment. When foraging, swim quickly first, mostly dive deeply, frequently emerge from the water surface, breathe loudly, and sometimes there is dirt in your mouth, which stirs up swells tens of centimeters high on the water surface. When you find the prey, you rush forward, then turn around quickly, hit the water with the tail leaves, stir the water, drive away the fish and scare them away. Then swim quickly, get close to the prey quickly, turn around and swing your head flexibly, and locate accurately. After biting the prey, the fish head is adjusted to face the throat and swallowed quickly, and then the next prey is carried out. Sometimes, several smaller fish are caught in their mouths and swallowed again. After eating, swim slowly or suspend in water. If a group finds a group of fish, they will coordinate their actions and swim separately from each other. The diving is not deep and the swimming direction is uncertain. Often accompanied by jumping forward and shaking your head, it will surround the prey. Dozens to hundreds of chased silvery white fish were forced to jump out of the water, making the water silvery, and the scene was spectacular. While the finless porpoise preys, seagulls hovering in the air will arrive in time. When the small fish surface, they will constantly skim over the water and snatch the small fish.

The finless porpoise has a wide range of activities, such as tropical to warm temperate waters such as the western Pacific Ocean, Indian Ocean, Sea of Japan and coastal areas of China. It is distributed in the Bohai Sea, the Yellow Sea, the East China Sea, the South China Sea and the Yangtze River in China, and can even be traced back to the Yangtze River.

Distribution of finless porpoises The mating of finless porpoises usually takes 30-60 minutes from the passionate pursuit of male and female animals to the end of mating, which can happen more than ten times a day, day and night. When chasing female animals, male animals swim back and forth with their bellies and tail handles, with various postures such as tumbling, sideways swimming and upward swimming. The water surface is often stirred by waves and splashes. When escorting, male and female animals touch the water surface or dive into the water in parallel, and different parts of their bodies touch and rub against each other. Sometimes they touch each other with their snouts and kiss each other's reproductive parts, which gradually leads to mating. When * * * reaches a certain level, it will face each other and the reproductive fissure will close. The male animals will show their genitals and continue to swim together until the genitals of the male animals are inserted into the female animals and combined. At this time, the water surface is relatively calm, and after about 2 minutes, mating is over. Male and female animals slowly rise from the water and then separate.

Two captive finless porpoises were delivered about 10 days ago. The female's breathing frequency is increasing day by day, and her food intake is gradually decreasing. Five days before delivery, cleavage of mammary gland and gonad gradually expanded, opened and protruded. Swimming often stops on the surface of the water, and the body shakes from side to side, as if losing balance. About 25 hours before labor, the external * * * was further opened, and milky white liquid flowed out of the mouth. During childbirth, * * * swims up and down to the right, tumbling once, swimming slowly after about 2-3 minutes, and swimming again after 3 minutes. Every time she swims in a hurry, the mother dolphin begins to exert her strength to make the calf give birth, but as soon as she relaxes, the calf shrinks back. Until a period of time later, the woman suddenly continued to force the whole fetus to be delivered. The cubs immediately struggled to swim upstream, while the females swam in the opposite direction of the cubs, breaking the umbilical cord. The cubs rushed out of the water and breathed the air. The whole delivery process lasts about 160 minutes.

The gestation period of finless porpoises is 1 1 month, and they usually breed in late spring and early summer. After the baby finless porpoise is born, it will stick to its mother's back and swim with her. The baby finless porpoise will be weaned within six to fifteen months. Female finless porpoises give birth from April to May every year. The newborn finless porpoise is about 70 cm in length, with each fetus 1.

Raising females has obvious behavior of protecting and helping their young, which is very interesting in carrying and carrying. When carrying the belt, the baby's head, neck and abdomen lean against the mother animal and lie on her back. When breathing, cubs and females come to the surface one after another. When the young grow up, females often swim with flippers or tail leaves supported by the mandible or other parts of their bodies, and emerge from the water one after another when breathing. The way of handling is more common. The females and their young are very close, about 5~ 10 meter apart, but they don't touch the body and touch the water one after another. During breastfeeding, females and their young often appear in shallow water and slow water. The female leans slightly to one side, revealing a flipper, while the larvae cling to the female's abdomen. The breastfeeding time is about 5~ 10 minutes each time. Sometimes, male animals will also take part in raising their young and let them swim between male and female animals, but generally they are closer to female animals, and the "family" rises and falls in the water at the same time, almost parallel to the water surface. Females of finless porpoises are very maternal, and if their cubs are unfortunately captured, females often cannot bear to abandon them.

Today, finless porpoises can be divided into three subspecies:

Neokrill, distributed along the Indian Ocean coast, is very common in Hong Kong.

Oriental finless porpoise, distributed in the Yangtze River, Xiangjiang River and Ganjiang River.

New Ampullaria gigas distributed in Korea and Japan.

The present situation and reasons of population decline In 2006, China and seven countries jointly investigated the finless porpoise in the mainstream of the Yangtze River, and the number exceeded 1.200, which was less than that of the giant panda. From Yichang to Shanghai, the number of wild finless porpoises decreased by 6.4% every year on average. If it is not protected, it is estimated that the wild finless porpoise will be extinct in many years.

The finless porpoise is the only freshwater mammal in the Yangtze River, distributed in the middle and lower reaches of the Yangtze River, Dongting Lake and Poyang Lake, and its population has declined rapidly in recent 20 years. The data show that the number of Yangtze finless porpoises in 199 1 is more than 2,700. In 2006, after more than a month's investigation, the international joint scientific investigation team found that the number of finless porpoises was insufficient 1800; 20 1 1, their number may only be more than 1000, and there are only 85 finless porpoises left in Dongting Lake. The number of Yangtze finless porpoises is less than that of national treasure giant pandas. By the end of 20 12, there were only 1200 Yangtze finless porpoises. The Yangtze finless porpoise is expected to be functionally extinct in 10~ 15 if it is not protected quickly.

"The finless porpoise is sparkling, and freshwater whales have existed since ancient times; Endangered species need protection, and it is a good friend of mankind. " The finless porpoise is a small dolphin adapted to seawater and fresh water. Because of its universality and particularity, it is of certain significance to study the evolution and development of cetaceans. Its meat is edible, its skin can be tanned, and oil is a specific medicine for treating burns. The finless porpoise also has great ornamental value. Because of its high utilization value, finless porpoises have been killed by many unscrupulous businessmen for a long time to gain their own interests. The endangered path of finless porpoise is threatened by the change of natural environment, such as the decline of water level, deterioration of water quality, siltation of rivers and lakes, and reduction of prey. In addition, overfishing is extremely destructive to mother dolphins and young dolphins, resulting in a sharp decline in finless porpoises resources in the Yangtze River and Dongting Lake. By the end of 20 12, the survival and reproduction of the Yangtze finless porpoise had been seriously affected by the increasingly serious water pollution in the Yangtze River basin, the indiscriminate excavation of river sand and the illegal use of fishing gear.

According to the statistics of relevant departments facing extinction, in 2006, there were about 1800 finless porpoises in the Yangtze River basin. In recent years, this number has further declined.

The results of this scientific research on the Yangtze finless porpoise show that the Yangtze finless porpoise has been found 380 times in the main stream of the Yangtze River. In addition, 540 finless porpoises were found in Poyang Lake and Dongting Lake in 2005, when there were about 920 finless porpoises in the whole basin.

20 12 finless porpoises died in several sections of the Yangtze river basin, and more than 30 finless porpoises were found dead in Dongting Lake, Poyang Lake, Ezhou River, Anqing River and Nanjiang River.

In 200 1 year, Chinese and foreign scientists announced the functional extinction of the baiji, and since then, the finless porpoise has become the only freshwater dolphin in the Yangtze River. Wang, an associate researcher at the Institute of Hydrobiology, Chinese Academy of Sciences, said that if the population decline is not improved, the finless porpoise may become extinct in the next 15 to 20 years.

Wang Ding, an international expert on freshwater dolphins and a researcher at the Institute of Aquatic Sciences, Chinese Academy of Sciences, said that the extinction of intermediate links in the food chain may lead to the collapse of the food chain. As the top species in the Yangtze River ecosystem, if the finless porpoise also disappears, it will mark a serious change in the natural ecological health of the Yangtze River, and the prelude to the extinction of aquatic species will be opened.

Wang Ding said: "From a biological point of view, similar species such as baiji, paddlefish and shad almost died out at the same time, which means that the ecology of the Yangtze River has undergone a serious mutation in a period of time."

The reason for the decrease of finless porpoise is the same as that of functional extinction of baiji, mainly due to human activities.

The dredger that often works on the river is an example. These dredgers have particularly serious damage to the ecological environment, and have a great impact on white dolphins and finless porpoises. Water pollution and water conservancy projects have also destroyed the living environment of finless porpoises to some extent. In addition, the finless porpoise was trapped and killed by illegal fishing nets hanging along the Yangtze River, propellers of motorboats in the Yangtze River and barbaric fishing methods. With the expansion of electric fishing scale and the prevalence of fried fish in winter, the death of finless porpoise by electric shock has occurred from time to time. Ecstasy (setting a net array near the relatively shallow lake embankment, pulling a large net into the lake with bamboo poles to enclose a large area of water) is also an illegal fishing gear, and finless porpoises are often killed by mistake.

At the same time, experts pointed out that the sharp decline of food resources, Yangtze River shipping and pollution emissions are the three "killers" leading to species extinction in the basin.

According to experts, the cold fishing and overfishing of fishermen in the middle and lower reaches of the Yangtze River, including the two lakes, have led to a significant reduction in fishery resources. "All kinds of fishing' ecstasy' even caught the fry released by * * *."

Injured finless porpoise "For aquatic mammals like finless porpoises, the busy shipping of the Yangtze River is also an important cause of their death." Wang Ding said that the finless porpoise, like the baiji, mainly relies on sonar echo for positioning, and the sound of the propeller of the ship will mislead the finless porpoise, and eventually it will be caught or twisted by the propeller.

The reporter saw in some photos of the dead finless porpoise that the streamlined body was covered with scratches by propellers and fishing hooks, which made people feel distressed.

Zhang Xinqiao, a member of the expedition team and an official of the WWF finless porpoise project, said that the density of cargo ships in the main stream of the Yangtze River, especially in the lower reaches, is very high, with an average of nearly 50 cargo ships every half hour. From Zhenjiang to Jiangyin, the half-hour cargo ship density is 105.

According to the regulations of nature reserves in China, production facilities should not be built in the core area of nature reserves, but researchers found along the way that many dolphin reserves have become shipping arteries, and activities such as shipping and fishing are inevitable.

Some river sections are not far from sand collection points, factories and docks, and the sound of machines is rumbling and busy. There are also many heavily polluting enterprises such as steel mills, chemical plants, paper mills, shipyards, shipbreaking yards and dangerous chemicals docks on both sides of the Yangtze River.

The serious consequence of predatory development is water pollution. Every year, 32 billion to 34 billion tons of wastewater is injected into the Yangtze River. "The total amount of wastewater discharge has increased slightly year by year," said Mu, chief engineer of the Water Resources Administration Bureau of the Yangtze River Water Resources Commission.

In addition, experts believe that the construction of large-scale water conservancy facilities on the Yangtze River has blocked the life channels of some migratory aquatic organisms and destroyed the habitats of rare aquatic animals such as finless porpoises. There is more and more water on both sides of the Yangtze River.

Mud slope protection, Wang Ding said: "These have broken the original interconnected and interdependent ecosystem."

The protection level is listed as extremely dangerous (VU) in the IUCN red list.

Known as the "living fossil" and "giant panda in water" of the Yangtze River ecology, the finless porpoise is a first-class protected animal in China, mainly distributed in the middle and lower reaches of the Yangtze River, Dongting Lake and Poyang Lake. In 2006, scientists from six countries, including China, the United States and Britain, formed a "Yangtze River Freshwater Dolphin Expedition Team" to search for baiji in the Yangtze River 1700 km reach. Finally, it is concluded that the functional extinction of the baiji has led to a sharp decline in the number of finless porpoises, leaving only about 1800, which is less than that of the giant panda. He also warned that the finless porpoise is decreasing at a rate of 5%~ 10% per year, and if strong protection measures are not taken, it is likely to drop to 200 in 2035, reaching the critical standard of the IUCN Red List of Endangered Species.

Girls shed tears for finless porpoises, and fishing is prohibited. In 2008, Science magazine paid attention to the ecological protection of the Yangtze River basin. And published an article entitled "The Last Chance to Protect the Ecology of the Yangtze River", which deeply analyzed the increasingly severe living form of the Yangtze finless porpoise. Wang Ding, deputy director of the Institute of Hydrobiology, Chinese Academy of Sciences, said that the number of finless porpoises is decreasing by 5% every year. Human activities are an important reason for the extinction crisis of finless porpoise. The finless porpoise is likely to become extinct around 15. Experts call for a 10 year fishing ban in the Yangtze river basin.

There are also many signs that the Yangtze River is increasingly unsuitable for the survival of finless porpoises. It is more like an artificial canal than the "river of life" and "mother river" that have nurtured Chinese civilization for thousands of years. Wang Ding said that her natural attributes are weakening and being replaced by "channelization" and economic attributes.

"Imagine that if one day the Yangtze River is reduced to an artificial canal for shipping and sewage discharge, how can the civilization that originated in Sri Lanka last for thousands of years? If the iconic Yangtze finless porpoise is extinct, how can humans who are also mammals survive? " Wang Ding said.

How to protect finless porpoises playing in the water? How to protect the ecology of the Yangtze River? How to prevent civilization from breaking? This is an unavoidable reality torture.

Mu believes that changing the mode of economic growth can effectively protect the ecological environment. "If enterprises with high energy consumption and high pollution are not established in the future, some backward production capacity must be eliminated to balance the economic growth and ecological bearing capacity of the Yangtze River."

For finless porpoises, it is necessary to further strengthen in-situ protection and ex-situ protection, and increase scientific research investment in artificial breeding of finless porpoises. Wang said that unlike the decrease in the number of most river sections, finless porpoises in some local protected areas with less economic activities have been better protected.

Experts call for a total ban on fishing in the Yangtze River. Statistics show that the Yangtze River catches about 654.38+million tons every year, which is less than one thirtieth of the market demand. Aquaculture can fully meet the market demand. "If we can rest for 5 to 10 years, the fishery resources of the Yangtze River and even the entire Yangtze River ecology will be unexpectedly improved." Cao Wenxuan said.

Set up a protected area: "finless porpoises jump and shine in the waves, and freshwater whales come from ancient times;" Endangered species need protection, and it is a good friend of mankind. " China's scientific research on the "living fossil" finless porpoise began in the 1990s. Driven by the appeals of scholars and experts at home and abroad, Tongling Freshwater Dolphin Nature Reserve, the first Yangtze finless porpoise reserve in China, was built and put into research work in Tongling, Anhui.

Researchers in Tongling Freshwater Dolphin Nature Reserve have carried out a series of scientific research around the capture, reproduction, reproduction and habitat protection of finless porpoises, and achieved good results. With the approval of the State Council, the nature reserve was upgraded to a national nature reserve. The economic value of finless porpoises is very high, so the number of finless porpoises killed is increasing day by day, while human activities such as overfishing, shipping, water conservancy facilities construction and water pollution are still intensifying, which makes finless porpoises face the same threat as baiji, and the number in the wild is sharply reduced. However, due to the large number of finless porpoises in the wild, the number of finless porpoises rebounded after China took protective measures for aquatic animals such as baiji. Dozens of birds often appear on the Yangtze River, swimming upstream in the turbulent river, and their black backs sometimes jump out of the water and sometimes dive into the river. The scene is quite spectacular. What's more gratifying is that ships in the past made way for the finless porpoise for fear that it would be frightened, which shows that the awareness of human beings to protect wild animals is gradually improving.

The researchers are doing a physical examination for the finless porpoise. As early as the Miocene more than 20 million years ago, their close relatives flourished in the Yangtze River. Xu Shen (AD 58~ 148) in the Eastern Han Dynasty recorded in Shuo Wen Jie Zi that "a fish (finless porpoise) leaves Jiujiang and has two breasts".

As a mammal, finless porpoises breathe with their lungs. Before the arrival of strong wind and heavy rain, the fog pressure on the river surface becomes lower, so it is necessary to contact the water surface frequently for ventilation. In the past, fishermen regarded finless porpoises as "river gods". As long as the finless porpoise comes out against the wind, commonly known as "worshipping the wind", it means that there is a big storm coming, and fishermen are not suitable for fishing these days. Therefore, ancient and modern poets have made some famous poems.

Jinling nostalgia

Xu hun

Decadent music "Flowers in the Back Garden of Yushu" came together with Chen's fate; The lookout party in Jingyang Palace was filled with empty space. The cemetery trees in the cemetery cover the graves of many officials in previous dynasties; High and low young crops filled the palaces of the Six Dynasties.

The snail spreads Yun Ni's wings, and it rains for a while and clears up for a while; The finless porpoise added fuel to the flames in the river. The night was deep and a cold wind came. When heroes go to luxury, there are only green hills like Luo Zhong.

Four Knowledge of Fighting in Yueyang Tower (Sentence)

Han Yu

When the finless porpoise was playing, the shock wave suddenly rippled.

Dolphin poetry

Kong Wuzhong

The finless porpoise is black and the white porpoise is white. Different names, the same house was flooded. There is a group of fish in the deep sea, plundered by fat.

It hurts a little, but it's comforting. Dachuan was razed to the ground, and I can't afford it. Appear in pairs, pity its cheeks and mouth.

If you lean forward, if you jump, if you kneel. Boat people talk to each other, just shock them. People are eager to come to Vampa, and they are eager to visit the wall cloth.

In a blink of an eye, the wind came and the mountains shook. Waves are like wheels, and the atmosphere is foggy. Boat people in Yan' an are like battlements.

Tell me first and you will succeed. Crocodiles spit cattle and horses, and their heads are like dragons. Despair, and so did Andrew.

It's harmless to people. You can fill whatever you want. Expose your body and tell people to be loyal. And more oil to help you.

The rivers and lakes are poor, and the machine is based on agriculture. Birds and magpies know the wind, merchants and sheep know the rain. Under the building, why the wind and rain.

I didn't know you were sailing, you were accumulating risks. Occupy the sky with your own hands and enjoy Cai's experience. Ancient newspaper sacrifices, leaving no traces of insects.

Who is better, who is better, who is better? The world is not good, but it is evil. I wrote this song to explain its truth.

Two topics of singing finless porpoise

Yu Yafei

The finless porpoise jumped in the wind and water, breaking the heart of the waves; When you see this kind of landscape, you should be prepared. A strong wind is coming soon.

Protect the finless porpoise, the finless porpoise is sparkling, and freshwater whales have existed since ancient times; Endangered species need to be protected. It is a good friend of mankind.

Related news: A finless porpoise died within 43 days from March 3, 20 12 to April 7, 20 18, but 12 finless porpoises died in Dongting Lake area. Wang Ding, an expert in dolphin research at the Institute of Hydrology, Chinese Academy of Sciences, said in an exclusive interview that the number of 12 dolphins has reached an intolerable level, which indicates that the Dongting Lake finless porpoise may become the earliest extinct population in the Yangtze River basin. There are only about 1200 of this species in the whole Yangtze River basin, and the population is even less than the national treasure giant panda. Poyang Lake in Jiangxi Province is the most important habitat for finless porpoises, with about 300 to 500 finless porpoises, accounting for one third of the total finless porpoises in the Yangtze River basin.

A dead finless porpoise, Nanjing finless porpoise, died tragically.

On May 2, 2065438, a dead finless porpoise was found near Jinling Shipyard, Xiaguan District, Nanjing. This is the second finless porpoise with unknown cause of death found in Nanjing on October 20-0/2.

On 20 12 10 June10, Yueyang finless porpoise protection association found a dead finless porpoise, about half a year after the last collective death of the finless porpoise on12. It is understood that there are more than 50 finless porpoises in Dongting Lake.

"Thank Dolphin Fund" was formally established.

Volunteers from Wuda Green Boat Environmental Protection Association showed Jane Zhang the video made in the activity of "Looking for the Last Shelter of the finless porpoise". When President Song Jinjing introduced the harvest and experience during the activity to Jing Ying, Song Jinjing said that the team found that residents living around the Yangtze River knew more about finless porpoises, but lacked understanding of the reasons for the reduction of finless porpoises and their own connections. It is hoped that WWF will protect finless porpoises and let them have a deeper understanding in this respect. On behalf of Wuda Oasis, Song Jinjing presented two dolphin dolls named "Lolo" and "Jiajia" and posters made by the team to Jane Zhang, expressing the hope that the finless porpoise would not make the same mistakes as the baiji in the future.

On June 25th, 20 13, Jane Zhang held a press conference in Beijing, announcing the establishment of the "Thanksgiving Dolphin Love Fund" jointly sponsored by the Baiji Dolphin Conservation Foundation and WWF (World Wide Fund for Nature), and released the public service single "Thanksgiving" (EP). As the conservation ambassador of the Yangtze finless porpoise of the World Wide Fund for Nature, Ms. Zhang solemnly submitted the first donation cheque of 800,000 yuan to the Wuhan Baiji Dolphin Foundation, and announced the official launch of the "Thanksgiving and Love Dolphin Fund".

Ms. Zhang commemorates International Freshwater Dolphin Day.

From June 5th to1October 6th, 2009, the Asia Freshwater Whale Protection Forum was held in East Kalimantan, Indonesia. Dolphin protection experts from Indonesia, China, Khmer, Bengal, Myanmar, India and Pakistan got together to discuss the protection plan of freshwater dolphins in Asia. At the meeting, H.Awang Faroek Ishak, an official from East Kalimantan, Indonesia, suggested that Asian countries should take 65438+1October 24th as the International Freshwater Dolphin Day.

Protection measures At present, there are less than 2,000 finless porpoises, and they are still declining. Therefore, it is urgent to strengthen the protection of finless porpoise resources. Although China has listed the finless porpoise as a national first-class protected animal, there are no other supporting protection measures. Therefore, it is of great significance to establish a nature reserve for finless porpoises, study artificial domestication and breeding, and release the breeding resources of young finless porpoises.