From the category point of view, sea pigs belong to mammals, which reproduce by viviparous means. Judging from the living environment, porcupines like to live in warm shallow waters in the ocean. In terms of body shape, porcupines are relatively large, with a body length of 1.2- 1.9 m and a weight of 100-220 kg. Judging from their feeding habits, porcupines eat meat and belong to carnivorous animals. They can eat eel, perch and other aquatic animals such as shrimp and squid.
The porcupine belongs to mammals in terms of category, so it is a mammal. As mammals, their key characteristics are the same as those of other mammals.
Living habits of sea pigs
Sea pigs have toxins in their skin and like to live in groups. When they gather, they will collectively face one direction, that is, the direction of the current. Much like sunflowers. The life of sea pigs is very fragile, easy to be attacked by parasites, and may die after a poke. Sea pigs live on the surface of deep seabed mud, and eat "ocean snow" or other organic substances, even microorganisms, which have settled down from the upper seawater.
When eating, the food will be grabbed by tentacles and sent to the mouth. The food is decomposed by digestive juice in the digestive tract, and the body absorbs the nutrients, and the food residue is excreted through the anus. Therefore, although the porcupine is almost full of water, it also digests food through the digestive system, obtains nutrition, and survives well.