Cartilaginous Fishes

Real World Example

Imagine trying to carry a heavy grocery bag filled with rigid boxes compared to one filled with flexible packages. In the same way, cartilaginous fishes have skeletons made of cartilage, which is lighter and more flexible compared to the rigid bones of other fish. Just as the flexible packages in the grocery bag make it easier to carry and maneuver, the cartilage in these fishes allows them more agility and buoyancy in water, highlighting how the material's structure impacts functionality.