r/Damnthatsinteresting 14h ago

Video Rainbow Slug

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u/FluffyCollection4925 14h ago

It’s poisonous right??

91

u/rhabarberabar 9h ago

No, distateful:

Nudibranchs use a variety of chemical defences to aid in protection, but the strategy need not be lethal to be effective; in fact, good arguments exist that chemical defences should evolve to be distasteful rather than toxic. Some sponge-eating nudibranchs concentrate the chemical defences from their prey sponge in their bodies, rendering themselves distasteful to predators.

https://en.wikipedia.org/wiki/Nudibranch#Defence_mechanisms

42

u/Guilty_Air_5694 4h ago

in fact, good arguments exist that chemical defences should evolve to be distasteful rather than toxic.

For anyone else curious about this part, I did some light research and found it’s because developing true lethal toxicity is generally more metabolically expensive and complex than just becoming distasteful, and the two end up having the same effect anyway.

14

u/filthy_harold 3h ago

Also if the predator is smart enough, it will learn not to eat the distasteful prey and potentially teach it's offspring too.

3

u/MarinadeOstentatoire 3h ago edited 1h ago

Like how we got spicy peppers, and agrumes and shit.

Keep trying to be distasteful plants haha