Craig Mammalton is an extremely tanned seal who many seem to respect due to his tanness. He only appears in "Sun Bleached" in which he throws a huge party only for those as tanned as he is. SpongeBob and Patrick try to get in; Patrick is able to get tan but SpongeBob gets sun bleached due to Patrick's stupidity. They try many techniques to get tan. Finally, SpongeBob covers himself in caramel. However, at the party it hardened and fell off. However, SpongeBob was praised for it, as it was an even deeper tan than Craig's was. They all tried to get sun bleached as well; however, he and everyone except for were burned to ashes while doing so. Due to SpongeBob and Patrick still being able to talk, it is likely that everyone else survived.
Craig Mammalton shows much resemblance to Larry the Lobster including having a similar voice (but different voice actors). He is a seal that is extremely tan. His tan is said so deep that even his bones are tan. His skin is very leathery and wrinkled from tanning. Just like Larry he tends to be very popular, and cares much about his appearance. He wears a green bathing suit.
As shown in Sun Bleached, his bones are a rich golden caramel brown.
Craig's name and notorious tan skin are a reference to film and television actor George Hamilton.