GSD Aquarium Colorful Coral Reef Set Fish Tank Decoration Mountain Ornament for Aquarium Environments Decor Accessories, Coral Mountain x 1, Aquatic Plant x 4Size: Great for fish tank decorations, also good for model making and marine aquariums. Packing Included: Coral Mountain x 1, Aquatic Plant x 4. Material: Gorgeous colorful aquarium coral reef set is made of high quality resin, no any harmless to humans and your fish. It will not release any harmful substances even if placed in water for long. Solid one piece construction: This resin coral reef designed with one piece construction, not easy to broke.