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The Chinese white dolphin, an endangered marine species, has relatively poor eyesight. This phenomenon is mainly due to the particularity of its habitat, and the turbidity and light refraction in the seawater make it difficult to obtain visual information. In addition, limited vision in deep water is also an important cause of poor vision.
In such an environment, in order to survive and hunt, white dolphins have developed a relatively complete echolocation system to make up for the lack of vision.
The Chinese white dolphin perceives its surroundings by emitting sound and receiving echoes, which is known as the echolocation system. Its main role is to help the white dolphin navigate and hunt, so that it can accurately perceive the position, shape and size of the objects around it, so as to better adapt to the complex and changing marine environment.
The Chinese white dolphin has an air sac structure under its nostrils, and this special physiological structure plays a vital role in the echolocation system. This structure opens and closes the nostrils to generate a specific sound signal that provides a carrier for the white dolphin's echolocation system to emit sound.
The nostril air sac makes a sound through the opening and closing of the nasal congestion, producing a sound signal of a specific frequency. This change in frequency helps the dolphin perceive the position and distance of different objects in its surroundings, providing an important information base.
White dolphins emit sound, and when the sound hits different objects, it will reflect back signals of different frequencies. By receiving these echo signals, the white dolphin is able to accurately perceive the situation in its surroundings and respond accordingly.
The inner ear of the white dolphin is able to precisely process and analyze the echo signals, allowing for precise localization of the surrounding environment. The echolocation system provides a unique way for white dolphins to perceive and survive, allowing them to survive and thrive in complex marine environments despite poor vision.