Do Sharks Have A Swim Bladder. The swim bladder is an important part of the anatomy of fish but many fishes which stay on the ground level of the. Their sizeable livers, filled with an oil that contains squalene;
Bony fishes utilize swim bladders to move up or down vertically in the water or remain at a uniform depth. Sharks do not have swim bladders. Sharks, on the other hand, do not have.