Cow sharks are a not very well known type of sharks. All cow sharks have extra gills, and thats just plain awesome!!! There is 37 species of cow sharks. COW!!
Okay, I just went crazy with the fact that there are 250 species of cows. (the mammals) yeah that has nothing to do with this at all. OK moving on. Cow sharks skeletons resemble those of extinct sharks. These sharks are super awesome!!