Bathynomus Giganteus

A recent submarine expedition has pulled up a rarely seen underwater creature, called the Bathynomus Giganteus.

The story behind this particular crab like Bathynomus Goganteus is a wee bit of a mystery

Source: http://www.nowpublic.com/environment/bathynomus-giganteus-reddit-solves-mystery-giant-isopod-2599247.html