Sea Rhinoceros

The Sea Rhinoceros is a large dangerous fictional species of fish native to the ocean floor and appears in the end of the Spongebob episode "The Camping Episode". They are attracted to the sound of a Sea Bear attack and the only way to protect themselves from them is by wearing anti-Sea Rhinoceros undergarments, anyone surrounding over an anti- sea bear circle is not protected. After Squidward was attacked by a Sea Bear numerous times a Sea Rhinoceros showed up and snarled at him ready to attack.