Which animals have echoes?

Dolphins, bats, seals and sea lions, insectivora's Erigeron species, Rhythmic short tail, South America's oil birds, Southeast Asia's Jin Siyan and some fish all have the ability of echolocation. They all have natural sonar systems in their bodies to complete echo localization.

Echo localization refers to a directional behavior of animals in navigation, foraging and other activities by comparing the information difference between sending sound waves and receiving echoes. Known echolocation animals mainly include insect-eating bats and toothed whales.

China pigtail rat:

China pigtail rat

Shi Peng Research Group and Liu Zhen Research Group of the State Key Laboratory of Genetic Resources and Evolution of Kunming Institute of Zoology, Chinese Academy of Sciences have been engaged in the research on convergent evolution and molecular genetic mechanism of echo location for a long time, and have published a series of research papers in several top international magazines. The animal ecology and evolution research group led by researcher Jiang has long been engaged in the behavioral ecology, phylogeny and classification of the pig-tailed rat, and reported a new species of the genus pig-tailed rat on 20 17.

Echo location principle: Echo means that sound waves will bounce back after hitting obstacles, and we will hear the sound again. This reflected sound is called echo. In the open air, the echo is blurred, because the vibration of the sound will spread around and the energy will be lost. In a closed space.