This eel was seen in about 40' of water at the top of a mini-wall in Grand Cayman. It was about 2 1/2' - 3' long. The time of day - noon.
My first thought was that it was a purple mouth, but the inside of the mouth was light-colored.
The eel was not bothered by us and was out swimming in and out of holes.
Is it a juvenile green moray??