Why Don’t Fish Fill Up With Water?


Answer ( 1 )


    Fish do not fill up with water because they have a specialized system of organs and structures that help them maintain the right balance of water and salts in their bodies. They have gills, which allow them to extract oxygen from the water and release carbon dioxide. The gills also help regulate the amount of water that enters their bodies by actively pumping out excess water.

    Additionally, fish have a structure called the swim bladder, which helps them control their buoyancy in the water. The swim bladder is filled with gas, usually oxygen or nitrogen, and allows fish to adjust their position in the water column. This gas-filled organ helps maintain the fish’s shape and prevents it from filling up with water.

    In summary, fish have evolved specialized adaptations such as gills and swim bladders to ensure that they do not fill up with water. These adaptations enable them to live successfully in aquatic environments while maintaining the necessary balance of fluids within their bodies.

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