uxcell Silicone Aquarium Aquascaping Sea Urchin, 3-Inch, Purple Fish Tank Sea Urchin Ornament; Design : Sea Urchin Diameter(Approx.) : 7.5cm/3";Height(Approx.) : 5.4cm/2.1" Base Diameter(Approx.) : 3.6cm/1.4";Material : Silicone & Ceramic Color : Purple; Weight : 47g 1 x Fish Tank Sea Urchin Ornament