27 deep sea fish you've (probably) never seen. Creatures you haven't likely netted lately, as listed by the Bounty Fishing blog.
The Aquatic Ape Theory (often referred to as the AAT or AAH) says humans went through an aquatic or semi-aquatic stage in our evolution and that this accounts for many features seen in human anatomy and physiology. Using the principle of convergent evolution, it says that life in an aquatic environment explains these features, and that a transition from ape to hominid in a non-aquatic environment cannot. See also: BBC (excellent), Wikipedia, Google.