Great Barrier Reef - Featuring 400 types of coral, types of mollusk, and species of fish, the Great Barrier Reef is the largest reef system on Earth. It was named a World Heritage Site in and is one of the most popular tourist destinations in Australia.
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.