Underwater treasures brings you this wonderful line of aquarium ornaments to compliment your custom aquatic environment. These incredibly realistic decorations are hand crafted and painted using only the highest quality materials. Underwater treasures ornaments are all non-toxic, and safe for use in both freshwater and saltwater aquariums. This helmet looks just like one you would find in the bottom of the sea. Broken glass, algae build up. Along with swim thru holes for your fish.