Bubble Guppies (2011)

S6E2 Fogzilla!

Deema, the lighthouse keeper, is celebrating her birthday, but her plans are threatened by a pesky creature called Fogzilla, who keeps extinguishing the light of her lighthouse. To save her special day, Deema must find a way to guide Capt. Molly's ship, which is bringing her birthday cake, safely to the shore. Without the cake, the celebration will be ruined!