With the Penn-Plax Nickelodeon Baby Shark Aquarium Decoration， you’ll be singing “dun dun dun dun” every time you look at your fish tank! This double-sided aquarium ornament is a fin-tastic way to decorate a child’s fish tank with their favorite shark. Made of safe and durable resin， this ornament is safe for both freshwater and saltwater aquariums. A sturdy bank will keep it firmly grounded， and it will instantly add some bright color and excitement to the tank. Cleaning it is easy， too. Just wipe it down and rinse it off when you’re cleaning your tank.