a sea snake is an aquatic animal. According to the category, the sea snake is a reptile, belonging to the Reptilia squamata family Elapidae. Therefore, it can be seen that sea snakes are also a kind of snakes, but because they live in water, they are called "sea snakes". Compared with snakes on land, sea snakes live in different environments. They like to live in shallow water, generally the depth of the water distribution will not exceed 100 meters, specifically, the depth of their distribution is different. They are not distributed very far away in the sea, generally around the continental shelf and islands. Some sea snakes prefer to live in clear water, while others prefer to live in muddy water.
Some of the snakes on land are poisonous, while others are non-poisonous. Sea snakes are generally venomous, they have anterior groove teeth, toxicity is relatively large. This kind of snake venom mostly belongs to nerve poison, which poses a great threat to human beings and many other animals, and even causes the death of bitten animals.
As mentioned above, the sea snake is a kind of animal in the class Reptilia, so it is a reptile. Reptiles and fish are two completely different creatures, and there is no intersection between them. From the point of view of evolution, reptiles evolved from fish, so they can be said to be more advanced than fish. Sea snakes, like terrestrial snakes, are reptiles. Even if they live in the water, their way of movement is crawling, not swimming with fins like fish.
