Lobsters are plentiful in PR and the SVI
purchase a small spear gun or make a snare and snorkel on the outside of the reefs, you should be able catch your dinner within an hour.
Spearguns are legal for fishing in PR, just make sure your not in Park waters. <img src="http://www.traveltalkonline.com/forums/images/graemlins/Cheers.gif" alt="" />