Aquatic Animals

 Aquatic Animals

Animals that live in the water for most of their time are known as aquatic animals, they can be vertebrate or invertebrate. They breathe either the oxygen in the air or the oxygen dissolved in water through their lungs, gills, or directly through the skin. There are many types of aquatic animals like fish, octopus, squids, whales, dolphins, turtles and etc. Some are very poisonous and some breathe the oxygen in the air on the surface of the water, some have a jelly-like structure and some have a structure like an insect. Their variety differs from their structure and different modes of adaptation.

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