Notes:

Glaucus Atlanticus, or the Blue Sea Slug, Blue Sea Dragon, or Blue Sea Swallow, is a small nudibranch that resides in the Pacific ocean, and it feeds almost exclusively on venomous marine invertebrates. Once it eats them by ripping off bit by bit with their spiny tongue-like organ, they transfer the venomous parts of the creature to the feathery protrusions on the end of their "arms," which are called cerata. It uses these to protect itself and, since the amount of poison stacks, it is even more dangerous than the hydrozoans on which it feeds.