Showing posts with label white sharks. Show all posts
Showing posts with label white sharks. Show all posts

Friday, September 12, 2008

MYTH - FACT

The Myth

Sharks have to keep moving, or they die!


The Fact
Not all sharks have to move. Sharks do, admittedly, need to keep water moving over their gills in order to breathe. But many species manage to do this while lying on the seabed and moving their gills to create a pumping effect. Others, however, like the great white shark, possess no muscles in their gills, cannot pump and do have to keep moving.

No wonder the great white shark is so darn hungry.