ELI5: Explain Like I'm 5

Aquatic animal

An aquatic animal is an animal that lives in water. It could be a fish, a jellyfish, a crab or even a whale. Just like how we humans live on land, these aquatic animals live in different types of water such as oceans, rivers, lakes and ponds. Some of these animals have special adaptations that help them survive in water depending on where they live. For example, fish have gills that help them breathe in water, while whales have lungs just like us but can hold their breath for a long time due to their size. Some animals like crabs move around by crawling on the bottom of the water, while others like dolphins swim by using their powerful muscles. Overall, aquatic animals are very fascinating to learn about and come in all shapes and sizes.