Crooked Island has challenging diving sites, particularly along the reef wall off its northern shore line.

Beyond and beneath it is the reef wall, against which the sea pounds ceaselessly with immense power.

Shallow water marine environment refer to the area between the shore and the beginning of the reef wall.

It is protected by a long reef wall and has an extensive coastline.

They are often found where Halimeda grows out of reef walls.

From Ponce there's good fishing beyond the reef walls about an hour offshore.

The diving and snorkeling opportunities along the reef wall here are said to be the best in Jamaica.

I kept an eye on the depths, following Nanou as she led me to where the reef wall turned sharp left.

The current had picked up now, to perhaps four or five knots, and we were flying along the reef wall, too fast to stop.

They clustered together eight or nine deep against a depression in the reef wall.