Brazilian Treehopper - a real living insect, which only pretends to be an alien helicopter. Its other name is "The Bell Bearer"; part of its Latin moniker stands for these utterly bizarre spheroids on the top (they are not antennae!
Green Tree Python Information [Facts, Types, Habitats, and Cages]
Glaucus atlanticus (commonly known as the sea swallow, blue angel, blue glaucus, blue dragon, blue sea slug and blue ocean slug). This little sea slug eats poisonous jellyfish and stores their venom for its personal use