1. Aquatic animals include silver carp, bighead carp, carp, hairtail, Spanish mackerel, lobster, Neopenaeus monodon, grouper, blue shrimp, swimming crab, blue crab, round toe crab, cancer, Hong Bei, mussel, snail, conch and clam.

2. Aquatic animals refer to animals that mainly live in water. Most aquatic animals have never lived without water in the process of species evolution. Some aquatic animals, such as whales and aquatic insects, were transformed from terrestrial animals to aquatic animals, and some of the latter did not rely on dissolved oxygen in water to breathe.