Reef balls on the sea bed. Reef balls 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. They are typically laid on a reef in large groups to create artificial reefs. There has been some debate about their effectiveness. Photographed off Bali,Indonesia | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Oldfield, Matthew |
Bildgröße: | 5158 px × 3425 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |