
Giant Isopod
This giant isopod is the kind of creature that horror movies are made of -- at least when it comes to his size (2.5 feet), segmented shell (which allows him to bend roll into a ball without losing any protection), and compound eyes (comprising 4,000 facets that let it track fast movements with ease).
Isopods are deep-sea dwellers that scavenge dead saline for food. But it's not as dangerous as you might think: According to Popular Science, isopods are harmless -- and since most of them live below 1,200 feet, you're not likely to run into one while swimming.
In Taiwan, however, you're apt to find them on the menu.