Like its namesake legend, the Abominable Snowman, the yeti crab has limbs that are covered in thick white hairs. These hairs are also covered in filamentous bacteria that give the crab an extraordinarily hairy appearance. In 2011, another species of yeti crab was discovered, and the role of these hairs became clearer. It appears that the crabs use their hairs as farmland for the filamentous bacteria that grow on them. They harvest and feed on these bacteria, and even wave their hairy arms in nutrient-rich vent seeps to fertilize their crop and increase their productivity.
A headless goddamned ghost appears right in goddamned front of them. You literally see it materialize on camera -- of all the entries on this list, this is the one you absolutely have to watch (here's a shorter version that cuts right to the ghost if you don't have 4 free minutes). Seriously, your mind will be blown like Eric Stoltz's penis in The Rules of Attraction. As they swing the camera lazily through the room, the ghost just walks very purposefully toward them like it's delivering a pizza, while a long, low moan emanates from its phantom lungs.