When I was a boy my parents took me to a little island off the coast of Venezuala called Bonaire. It is a picturesque place, one of the ABC islands that include Curacao and Aruba. Above sea level it is just the remnants of a dormant volcano, but beneath the sea it is one of the world's most beautiful places, and, as this video points out, 98% of it shoreline is covered in coral.
This video takes a very definite point of view, that our coral reefs need to be preserved. But it also shows some of the amazing scenes available under this little island.