The Sea Rhinoceros is a fictional creature briefly mentioned and shown in "The Camping Episode." He is large with a body like a turtle and a rhinoceros's head. In order to protect yourself from him, you have to wear Anti-Sea Rhinoceros Undergarments. These creatures are attracted to the sound of a Sea Bear attack, possibly picking up dead meat (like vultures), if the sea bear has killed and/or eaten anything and has something left over. They are easily twice the size of a Sea Bear. The Sea Rhinoceros is voiced by Dee Bradley Baker. The Sea Rhinoceros is a minor antagonist of "The Camping Episode."
The Sea Rhino has a large sea turtle body, a shark tail, 2 spikes on his back, a rhino head, and grey skin.