BonesOfTheMoonNudibranches are cute.
Dr. WeskerThey look dangerous. Are they?
ReverendIrreverenceThat’s a Blue Dragon (Glaucus atlanticus). They can eat the nematocysts from jellyfish and store them to reuse as their own stinging cells. So…“dangerous,” not really but as painful as they are beautiful…oh yes.
You don’t consider stinging jellyfish as dangerous?
What? No one said that. OP mused that they have no natural weapons, or danger per se, but instead borrow the jellyfish’s defense.
I see now. Thanks
Of course.
This particular species does sting, so I would argue it is dangerous. But its mechanism is super interesting: it eats the stinging cells from jellyfish, absorbs them into its own body, and uses them to sting others the same way. Some even release acid. Incredible!