Here is an above surface look at the wall area. Basically it's like a limstone block that seems made up of a million old shells and barnacles and has mangroves growing on top.
My attempt at an over/under shot here:
There were colorful fish all along the wall at every depth it seemed.
An example of a lovely fan coral we saw on this snorkel.
Cool wall hugging orange fish that flowed in little streams around every corner of the rock.