Wage war on boring aquariums with the Penn Plax Submarine Aquarium Decor - Large. This piece of military might is a perfect addition to any aquarium. Fish will love swimming around this decoration and taking shelter behind it. It"s crafted of non-toxic resin that works for saltwater or freshwater aquariums. * Crafted from durable resin * Features a blue submarine landed on rocks * Designed for both fresh and salt water aquariums * Adds a colorful, exciting underwater ship wreck theme * Dimensions: 10.5L x 3.5W x 5H in.