Reef balls planted on the sea bed, Pemuteran, Bali, Indonesia.
Reefballs were first developed in the US as a way to help the restoration of damaged coral reefs. They are normally made from a ph balanced concrete material and have a rough surface to promote settling by corals, algae and sponges. Reefballs are typically laid on a reef in large groups to create artificial reefs. There has been some debate about the effectiveness of reef balls.Add to Cart Add to Lightbox Download