Small Natural Sea Sponge. Measures approximately 2" in diameter.
May be moistened with purified water to maintain humidity level in a small crabitat or can be cut in half and placed in each water dish to allow tiny crabs a safe way in and out.
Sponges also contain nutrients such as Chitin and bits of natural shells that crabs will eat and are beneficial for their exoskeleton.
As with any natural product, each item is unique, sizes and shapes vary.
