Question

How do sharks control their buoyancy?

A.
using swim-bladders
B.
using their lungs to fill air
C.
using their stomachs to store water
D.
using their oil-filled livers
E.
using their cartilage to store liquid

Answer 1

However, sharks do not have such a bladder. Instead, they use several methods to maintain their buoyancy. These are 1) their sizeable livers, filled with an oil that contains squalene, 2) their fins and 3) their cartilaginous skeletons. The shark’s liver makes up as much as 25 % to 30% of the entire body mass of the animal.

Step-by-step explanation:

Answer 2

D. using their oil filled livers

Step-by-step explanation:

this is correct for Plato :)