The Barbados Plug N’ Play Rock Base is an awesome way to bring a part of the ocean home with you. This rock base has pre-drilled holes for our artificial corals, which can be purchased separately. The coraline rock color of this reef rock can be found on your nearest coast. You have the option of picking between four different sponge colors or no sponge color at all. This piece was designed to have multiple arches for your fish to swim through and hide.