And among the octopus and schools of fish, there they are: tiny, powerfully cute, neon-colored sea slugs. Nudibranchs (pronounced various ways, including NEW-duh-branks) are a family of sea slugs.

Raja Ampat, West Papua, Indonesia Info from Licensor: "This sea slug looks like Pikachu from the cartoon. It looks like a child waving his hand to annoy you. This gesture is very cute." ...

Biology researcher Sayaka Mitoh said she loves studying Japanese sea slugs because they are small, cute and weird. They can even briefly photosynthesize like a plant drawing food from the sun.