Tadpoles are larvae of frogs and toads and are related to amphibians. Through the tadpole stage, the growth and development process from egg to adult is completed. Tadpoles live in water, breathe through gills, and gradually develop into adults, with amphibious ability on land and in water.
2. Carp is related to fresh water environment and lives in lakes and swamps. Carp, as a common fish, adapts to the fresh water environment and has strong adaptability and reproductive ability. Feeding on plants, plankton and benthos in the water.
3. Crabs are related to arthropods and live in oceans or estuaries. Crab is an arthropod with a hard shell and plump plumage, which has good adaptability and can survive and reproduce in different aquatic environments. Feeding on benthos, algae and humus.
Sharks are related to marine life and live in the ocean. As the top predator in the marine food chain, sharks play an important role in the marine ecosystem. It adapts to various marine environments and feeds on other fish, marine mammals and marine invertebrates.