Brain coral is a type of brain matter shaped like coral. It only appears in the episode "Patrick SmartPants" and can be found in Brain Coral Fields.
It appears to look like a pink triangle shaped rock, but can greatly increase the intelligence of whoever wears it.
- The brain coral resemble Patrick's head, hence SpongeBob mistaking a brain coral for it.
- There is a real coral called brain coral, although it looks completely different.