The infinite content catalog of the earth.

The basic and thorough study of our planet, the earth, focuses on the key factors that form the natural history of our earth. Sunlight and fresh water dominate the life of all animals and plants on the earth, which leads to seasonal migration. In the Arctic spring, the polar bear mother and her baby come out of the cave. They only have two short weeks. They must cross the frozen sea before the ice and snow melt. They are in a dilemma. In this episode, we will see some of the rarest complete pictures of polar bear life. In more than three years, the camera captured the annual changes brought by the Okavango flood. The most advanced science and technology and aerial photography enable us to follow some large-scale migrations and experience the epic journey of hunters and hunted people.

The second episode "majestic mountains"

Welcome to this extremely rocky and snowy world. We will embark on the most magnificent mountain tour-from the mountains rising in low-lying areas to the top of Mount Everest, we will find some mysterious creatures born to meet the challenges of mountain life, and we will also see some rare phenomena such as lava lakes. It is this power that creates alpine apes, and at the same time, we will see the baboon community-a large community with more than 1000 members. In the Rocky Mountains, grizzly bears climbed to the top of the mountain and wolfed down summer moths. At the same time, in another world-the peak of Pakistan, we saw the shocking scene of snow leopard hunting.

Episode 3 "Freshwater Resources"

Fresh water is our most precious resource, which determines the distribution of life on the earth. Along the river, all the way from high peaks to the sea, watch spectacular waterfalls, fly in the grand canyon, explore the wildlife under the snow and ice in the deepest lake in the world, and witness the unique and vivid side of animal behavior: otters and crocodiles will fight it out; Short-tailed ape good at deep diving; White swan flying high; Wild piranhas live in the dangerous waters of the world's largest wetland.

Episode 4 "Cave Labyrinth Cave"

The swallow cave in Mexico is 400 meters deep, enough to put down the entire Empire State Building; The American agave cave system is 193 meters long and 500 meters deep, and there are amazing crystal structures hanging in the cave. Mysterious and unusual things in caves are usually overlooked. In fact, there are also some strange wild animals living there: cave angel fish hang themselves on the wall behind the cave waterfall through tiny hooks on flat fins; Cave Jin Siyan navigates through sonar system and builds exquisite nests with saliva; Cave salamanders in Texas have neither eyes nor pigments. It is amazing how they lived in this secret world full of stalactites, stalagmites and cave creatures for a long time.

The fifth episode "Dream Desert Desert"

About 30% of the land surface is desert. Although these areas are seriously short of water, the ecosystems are extremely diverse. Uncover the secret of survival in desert areas and experience the fleeting natural nature in this dynamic system; Watch the sandstorm nearly a mile high in the Sahara desert; The meandering of desert rivers will only exist for one day; Bactrian camels living in the Gobi desert will eat snow to get water; In the Ma Desert of Akata, llamas lick the dew on the back of cactus; In Death Valley of the United States, seeds preserved for decades will have a short flowering period due to rainfall, resulting in locusts with a width of 65 kilometers and a length of 160 kilometers. The unique journey across the Namibian desert shows us the long journey of elephants looking for food. The lion in the desert is looking for the wandering antelope.

Episode 6 "Frozen World"

The earth will continue its amazing and pleasant journey. We will follow the camera to make an impressive trip to Antarctica and arctic blue in the most extreme season. The timing camera will carefully observe a group of emperor penguins and show us the dynamic principles contained in their behavior. The unique aerial perspective gives us a clear picture: a polar bear swam 100 km, dived underwater for two minutes at a time, and finally attacked a group of walruses in exhaustion.

The seventh episode "The Vast Plain"

Planet Earth aimed at the frightened antelope, but few people actually witnessed their seasonal migration. At the same time, you won't miss the strange-looking Tibetan fox that first appeared in the camera. For six weeks, the staff used night vision goggles to observe the melee at close range in order to track a group of lions trying to kill elephants.

Episode 8 "Seasonal Forest"

The jungle covers about 3% of the earth, but it is home to 50% of the species on the earth. High-definition cameras let us see an unprecedented picture of life in the dark jungle. The largest chimpanzee group on earth lives in the Ngogo forest, and they defend their territory from neighboring groups. Other jungle experts, including parasitic mushrooms, invade an insect's body, feed on it, and then burst into new life.

Episode 9 "Diverse Shallow Seas"

Seasonal forest, with a large coniferous forest on the edge of the Arctic, is a quiet world of small conifers. Those trees may be really short, but when photographed at high altitude, the trees will show their true size. There are 1/3 trees growing here in the world. During the short summer, these trees produce enough oxygen to change the composition of the atmosphere. In California, there is a giant redwood called General Sherman, which is the largest creature in the world at present, and it is 10 times larger than the blue whale. The oldest creature in the world is the foxtail pine, which has lived for more than 4000 years, even older than the pyramids. The baobab tree in Madagascar is the strangest tree species in the world.

Episode 10 "Jungle in the Rich Jungle"

A female humpback whale and her cubs have started a long journey from the tropical paradise coral sea, and their destination is the polar ocean full of stormy waves. There are short seahorses newly discovered in the Coral Sea of Indonesia, clams with "electric" light, and groups of poisonous sea snakes. There are as many as 30 sea snakes in each group, swimming in groups to hunt. There are also scenes where sea urchins fall into the giant seaweed jungle and giant cowhide sea lions prey on South African emperor penguins. It's really great that these penguins have the courage to fight sea lions despite their weight disadvantage.

Episode 1 1 "The depth of the ocean is the breadth of the ocean"

In this episode, you will see how a 30-ton whale shark eats all the fish, and show how dolphins accelerate from a particularly high perspective. Gradually come to the depths of the ocean, you will see octopus with wings, and you will also see bloodsucking squid that changes color with luminous bodies. There are also shots of eels, crabs and tall animals completely eating food at a depth of 2000 meters for several hours.