|Residence:||Bikini Bottom Zoo, Bikini Bottom, Pacific Ocean|
|Enemies:||Eugene H. Krabs|
|First appearance:||"The Smoking Peanut"|
|List of characters|
Clamu is a purple pearl oyster with periwinkle lips. She has a pink-red tongue. She also has some dark purple spots on her shell.
Clamu is a pearl oyster at the Bikini Bottom Zoo who regularly spits a pearl 100 feet into the air.
In the episode "The Smoking Peanut," SpongeBob came to the Zoo and went to its exhibit. Clamu was sleeping. SpongeBob threw a sea peanut at Clamu, causing her to wake up and start wailing. She also threw one of her trainers, Joe, out of the Oyster Stadium, where she was held. Her crying could be heard around the world, even on the surface world. SpongeBob feels guilty of making Clamu feel so bad until it was revealed that the person who caused its distress was Mr. Krabs, who stole its egg, believing it to be free to take on Free Day. Fortunately, a zoopkeeper reclaims the egg and gives it back to Clamu. The egg then hatches, officially making her a mother. The citizens then angrily throw peanuts at Mr. Krabs for stealing the baby clam, much to his dismay.
Clamu is emotional when her baby was stolen. Though, when unprovoked, she is calm and known to do tricks as mentioned in "The Smoking Peanut."