Sea slugs use bold, bright colors under sunlight to warn predators of their toxic traits. These colors are easier for fish to ...

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.

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.