This bright shark is only 17 to 22 inches long, but what they lack in size is compensated for by disgust (as well as being very bizarre). As you can see, this cigar-shaped shark wanders the water, waiting for the larger prey to appear. Their bodies are luminescent, except for a dark collar on the back of their head, and this dark part is thought to be a fake shadow of a small fish, acting as bait.
Although the cookiecutter shark can eat an entire squid, its most famous feature is its parasite. First, they attach to the larger organism by pressing their suction lips against the animal’s flesh. Once they are attached, this shark bites on the host. The upper teeth act as an anchor, while the lower jaw moves back and forth like an electric scraper. The shark then twisted and turned, until it cut out a piece of meat about 2 inches wide and 2.8 inches deep.
Cookiecutter sharks, in fact, eat medium and large sized creatures that share the same tropical habitat. Whales, dolphins, sharks, seals and bone fish have been found to have been injured by them. This frightening little beast is also known to bite submarines, underwater cables, and even humans.
Seen more at: Shark bath soap wash your fins poster