Sea Rhinoceros

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The Sea Rhinoceros can only be held off by Anti Sea Rhinoceros undergarments, which Spongebob and Patrick are wearing. Squidward isn't so lucky.

The Sea Rhinoceros is a fictional creature briefly mentioned and shown in "The Camping Episode." It is a large fish-like creature with fins, grey skin and a rhinoceros's head complete with horns and rhino plating. It is possible to ward off the Sea Rhinoceros by wearing anti-Sea Rhinoceros undergarments. These creatures are attracted to the sound of a Sea Bear attack, they are easily twice the size of a Sea Bear. The Sea Bear and the Sea Rhinoceros are voiced by Dee Bradley Baker.