Yes ..I "tried" it one afternoon with some Jamaican lads ..oh ..lets say 10 years ago .. no licence required .. as i didn't even get remotely close to killing or catching anything ..not even sure I came close enough to spook them .. however the lads did fine and all three had enough fish ..albeit small ones to feed themselves that night .. they were especially adept at picking off the lobster on the cliffs near bloody bay ..
I decided that swimming down far enough for a closer look at the lobsters thereupon perched .. thats when my spearfishing snorkelling days came to an abrupt end when an eel ..that I didn't see lunged right at my face from a hole deep in the cliffs .. i scooby doed it out of the water ..leaving a shyte trail behind me ..Never snorkled since ..although I'd love to spend an afternoon spearfishing again .. it was a great way to spend the day ..