These are some pics of a beach on Espanola Island and these are our beach buddies
They're fine to share a beach with as long as you don't get too close or listen too carefully to them - the noise they make is a bit like vomiting.
Earlier that day we had been snorkling on the reef with white tipped sharks! Evidently they're a non-agressive type of shark (I looked it up after) so it was cool. They were were pretty big though, about 1.5 - 2 metres.