TIL about Sacoglossans, otherwise known as 'solar-powered sea slugs', that are incorporating living chloroplasts from their food source into their tissues to camouflage, otherwise called 'kleptoplasty'. And also that they're unique species apart of protists to do so.

https://en.wikipedia.org/wiki/Sacoglossa?wprov=sfla1

https://www.reddit.com/r/todayilearned/comments/15ik2v5/til_about_sacoglossans_otherwise_known_as/