2. Snake (scientific name: Serpentidae) is an animal belonging to chordates and reptiles. The body is slender, divided into head, trunk and tail, without limbs, or claw-shaped remains on both sides of the spawning opening of lower snakes.
3. Conch is a terrestrial gastropod. In Chinese, snails only represent species on land, but in a broad sense, they include giant shield-nosed worms.
Dolphin is a mammal that lives in the ocean. It is a small toothed whale distributed in different oceans. They live in groups and mainly eat fish and squid.