Phantom Hunter of The Fjords

What's worse than a shark? AN INVISIBLE ONE. The Phantom Hunter of The Fjords, or Etmopterus spinax, is a deep-water shark that employs special methods of seeking prey and hiding from predators by using a phenomenon known as counterillumination. Being able to fine-tweak light absorption, the shark goes through a complex chemical process that allows it to literally cloak it's silhouette. Little is known about this beast, apparently, IT'S INVISIBLE HALF THE TIME (This is an overstatement. thought the shark is practically invisible looking from below it, the shark is visible from a top view). Hey, at least we don't have invisible flying laser-shooting mega-sharks.

Interested? Get some sparse information here:

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6T8F-4YWBJSM-1&_user=4420034&_coverDate=05%2F31%2F2010&_alid=1348296815&_rdoc=1&_fmt=high&_orig=search&_cdi=5085&_docanchor=&view=c&_ct=8&_acct=C000063005&_version=1&_urlVersion=0&_userid=4420034&md5=d328c24ab4fea2a9bb534396a3b0169a