The Sea Biscuit otherwise known as the Red Heart Urchin is an easy addition to the aquarium. It this very short spines.
|Water Condition||72-78F, dkh 8-12, PH 8.1-8.4, sg 1.023-1.025|
The Sea Biscuit, known by the common names cake urchin and red heart urchin, is a large species of sea urchin which lives in shallow waters in the Caribbean. It may reach a diameter of twenty centimeters and is covered in reddish-brown spines.