It may be the most adorable sea creature ever—and seeing one face-to-face has been on the bucket list for a Japanese diver ...

Not all small animals can be cute, fluffy bunnies or soft ... the researchers knew they were sea slugs, but they soon realized there was something different about one of them.

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.