Yes, this is an animal. The Spanish dancer (Hexabranchus sanguineus - meaning "blood-colored six-gills") is a dorid nudibranch (sea slug). I think it's great color and design inspiration for a crocheted afghan.
Sea anemones are a group of water-dwelling, predatory animals of the order Actiniaria; they are named after the anemone, a terrestrial flower. Sea anemones are classified in the phylum Cnidaria, class Anthozoa, subclass Zoantharia. Anthozoa often have lar
Baby Slipper Lobster by Peter Parks: This baby slipper lobster is completely transparent, though as the creature grows, a thick shell will cover it. The lobster’s bizarre eyes may confuse predators while it floats among plankton, or tiny animals.
Amphioctopus marginatus, also known as the Coconut Octopus and veined octopus, is a medium-sized cephalopod belonging to the genus Amphioctopus. It is found in tropical waters of the western Pacific Ocean.