Lifelike Sea Urchin Decoration Set: The biOrb Sea Urchin Set features three highly detailed replica sea urchins in varying shapes and sizes, designed to bring natural beauty and texture to your biOrb aquarium. A perfect addition to your tank. Durable Ceramic Construction: Made from durable ceramic, these artificial sea urchins are built to last. They’re easy to clean, ensuring your aquarium decor stays in top condition for years to come. Ideal for Freshwater & Saltwater Aquariums: Whether you have a freshwater or saltwater aquarium, the biOrb Sea Urchin Set is designed to complement both, adding texture and contrast to any tank setup. Adds Texture & Visual Interest to Your Tank: Perfect for decorating the bottom of your biOrb aquarium, the sea urchin set adds visual interest and creates a more dynamic, multi-dimensional look by providing texture and structure to your substrate. Easy to Place & Maintain: These decorative urchins are simple to position in your tank and easy to maintain. They stay securely in place, adding lasting beauty and creating a more captivating aquascape.