The Penn Plax Navy Resin Aquarium Ornament – Submarine dives deep to bring nautical style to your aquarium. This resin aquarium ornament is sculpted of resin, hand-painted, and waterproof. About Penn Plax: Penn-Plax is a family-owned company in operation since 1959. They specialize in creating excellent pet supplies for animals both great and small. Best known for producing pet products at affordable prices, the Penn-Plax brand is synonymous with innovation and quality, keeping your pet foremost in mind. Dimensions: 2H in.. Made of resin. Hand painted. Submarine design.