Current location - Recipe Complete Network - Dinner recipes - The reason why seals are not fish is ( ) A. No scales on the body surface B. There is a spine in the body C. Breathing with lungs instead of gills D. can be in water
The reason why seals are not fish is ( ) A. No scales on the body surface B. There is a spine in the body C. Breathing with lungs instead of gills D. can be in water

Fish live in the water all their lives, breathing with gills and swimming with fins. Most of them have scales on their bodies. They are fertilized outside the body and lay eggs. Their body temperature is not constant. Their bodies are streamlined and have lateral lines. The seal's body is covered with fur, it can swim in the water, breathe with its lungs, and has the characteristics of mammalian viviparous and lactating animals, so it is not a fish but a mammal.