When observed at normal speed, species of sea cucumbers loosely known as "sea pigs" (such as the genus Scotoplanes) slowly ambulate across the darkest depths of the oceanic abyss. But when sped up, these animals look like half-horrible, half-adorable extraterrestrial reindeer on the move.

These particular sea pigs — which belong to the genera Amperima or Periamma — were recorded 2,324 meters under the ocean in the Endeavor Ridge off of Vancouver Island. And for more creeptacular creatures from under the sea, see the predatory tunicate.

Via Neptune Canada, which has such fun videos as squids attacking diving robots and humpback whale burps.