Which of the following is NOT a strategy that sharks use to keep buoyant in the water column?

Question

1)lightweight cartilage skeleton
2)they have a swim bladder
3)they have a liver filled with oil
4)aerodynamic lift

Answer 1

The option that is NOT a strategy that sharks use to keep buoyant in the water column is:

2. they have a swim bladder

Unlike bony fish, sharks do not have a swim bladder. Instead, they rely on their lightweight cartilage skeleton, oil-filled liver, and aerodynamic shape to maintain buoyancy.