Experience the marvelous wonder of Bikini Bottom right in your aquarium with the Penn-Plax Officially Licensed SpongeBob SquarePants Krusty Krab Fish Ornament! Designed to easily fit into almost any fish tank, this fun, decorative ornament makes the perfect accent to your aquarium of any size. Safe for your fish and your freshwater and saltwater aquariums, this decoration features a sturdy base, so it won’t float around once placed under water.