How big is the Shark Brain?
While brain size cannot be generalized to every shark species, some of them have a Y shaped brain with two bulbs, measuring about 2 feet (60 centimeters)
Some writers have said that the shark brain is the size of a golf ball, but this is not accurate.
The brain mass to body mass ratio in sharks is much lower than humans, but a very good ratio even compared with some mammals.
In general, sharks have complex brains.