This is an interesting place for divers and snorkelers. Above the shallow plateau and reef you will always find black margates, hence the name of this site. There is little to moderate flow.
The reef starts at 26 feet with a drop off at 43 feet, which slopes gently to 138 feet where a sandy bottom begins. Directly on the side the bottom consists of limestones covered with coral, you will see a lot of grazing fish here. A little deeper you will find larger corals and anemones.
Between 26 and 66 feet you will find the most fish. Further than 92 feet you will see a lot of plate coral and black coral. Underneath the reef you often see eagle rays, and sometimes you even see turtles, but often you will see the last earlier, at the drop off.
Do you want to visit Margate Bay? In Bonaire Dive Guide you can find more information and detailed directions. Convenient, as many dive sites on the South coast are off road and hard to find. The guide is also practical as a reference and safe: leaving your mobile phone in the car during a dive is not wise.