Re: Contest/Game - Identify this picture
you may be right as it says in
off west coast of Grenada..Molinere Bay
Interesting to see there are the same pictures in other links which name off west coast Isla Mujeres.
Cancun Underwater Sculpture Museum | Amusing Planet
At least all sites agree with the author Jason de Caires Taylor.
Life is an experiment, use the right tools and elemnts, and you'll fine.