Sperm whales, also known as cachalots, are a species of whale. They are the largest toothed predator in the world.

SpongeBob SquarePants features a sperm whale, Pearl, as one of the main characters. Various other sperm whales have appeared on the show, with their designs based on Pearl's.


The characters who belong to this species are:


In SpongeBob SquarePants, sperm whales are much smaller than their real-world counterparts. So that Pearl could fit in the frame of each episode, Stephen Hillenburg decided to make her only about twice the height of SpongeBob.

Like actual sperm whales, which have the biggest brain of any animal on the planet, Pearl has the biggest brain in Bikini Bottom. However, she is still young and immature. One big difference between Pearl and actual sperm whales is her diet. In reality, sperm whales are an apex predator. Stephen Hillenburg wanted to subvert this and have Pearl be a vegetarian. She only eats salad and does not eat the other characters.

For the first eight seasons, Pearl was the only sperm whale who ever appeared in Bikini Bottom. In season 9, sperm whales started to appear as bit characters, like the whale cellmate and the goth whale.

Lori Alan plays most of the whales on the show. Mark Fite voices the whale cellmate in "Jailbreak!" and Clancy Brown voices the Arctic sperm whale in "Out of the Picture."

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