They might not look it, but sea cucumbers are pretty special creatures. Just ask this guy, Steven Purcell, one of the world's foremost experts on sea cucumbers. Purcell: They're quite strange animals.

While the opalescent nudibranch is a type of “sea slug,” it is also a brilliantly beautiful and vibrant creature. The colourful species each have flowing projections on their backs that ...

A scary-looking creature with “devil” in its name was spotted close to the surface off Tenerife, a Spanish island.

Flowers may be pretty and all, but one sea lion seems to have found a more practical use for them in a hilarious clip.