This site was named after the abundance of blue corals in the area. The topography consists of three spurs of coral starting at around 10m and extending out to 50m with sandy gullies in between.
A grass plain is found to the shoreward side and this grass extends down the centre of the gullies to 30m.
At the south reef there is a circular reef supporting some nice black coral bushes. There are numerous small pinnacles at the top of each spur and this area abounds with a variety of nudibranches.