Craig Mammalton is a famous sea lion who first appears in the episode "Sun Bleached."

He is a caramel-brown seal lion with very leathery skin. He wears a lime-green speedo.

According to Perch Perkins' documentary, Craig has been interested in sports from a young age.[2]

In Kamp Koral: SpongeBob's Under Years, Craig resides in the Frigate Cabin with Larry the Lobster, Mo, and Tall Tail. He mainly appears in background roles, although he is the focus of "Eye of the Hotdog