Whale sharks do the math to avoid that sinking feeling-Hannah Moerk

http://www.biologynews.net/archives/2010/11/26/whale_sharks_do_the_math_to_avoid_that_sinking_feeling.html

Summary:
Whale sharks are the largest species in the ocean. How do they float so well? In the last four years research has been done looking into their technique into more detail. The conclusion is it's a combination between energy conservation and math. They use their movement both for survival and to find food in the ocean.


Opinion:
Until reading this article, I never thought much about the movements of this giant shark. The research collected has shown that the whale shark has to move its' tail swimming down, but not while swimming up. This is due to the "buoyancy" within the shark. This movement is made up of both energy conservation usage and the appropriate math to keep them suspended. As more research is done on these interesting creatures, I will be fascinated to see how this whale shark's buoyancy compares to other fish.