Best of Mike #328

Ridged Cactus Coral are members of the fleshy corals family. 

The ridged pattern as wells as the height and depth of the valleys will vary according to environmental conditions

They are typically shades of gray, green or brown with the ridges usually being contrasting shades or colors.

The ridges may appear to be fleshy, as this is where the tentacles will extend from when they are feeding.