Snakes are a type of animal in the phylum Chordata and class Reptiles. The body is slender and divided into three parts: head, trunk, and tail. There are no limbs or claw shaped hind limb remains on both sides of the transverse fissure of lower snakes; Covered in scales all over; The head of the sea snake family varies in shape, with nostrils located on the snout side, but it is a lifelong marine snakeThe species is located on the back of the kiss; There is protective transparent skin outside the eyeball, with round, vertically elliptical or horizontally elliptical pupils, no active eyelids, and the crystal is almost spherical; Tongue elongated and forked; The anterior jawbone, maxilla, palatine bone, pterygoid bone, and dental bone are attached with teeth with pointed posterior curvature, but the size, number, and structure of the teeth vary among different snake species; The tail is noticeably shorter than the length of the head.


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