of course there are sharks. but pretty sure you're safe. last trip my girlfiend and i did a deep sea Pelican snorkling adventure and encountered one. it swam about 25ft below us. we have a great picture of it. at the time it seemed like a large fish but were suprised when we got the picture developed. sharks can be anywhere at anytime, but want to be left alone just as we do. unless you have chaw the water and dont slash around like a wounded animal you're safe.