I have never been to NJ but I have been to Bermuda many times and I do live on the west coast of the U.S. and I have yet to see a shark in either place. Bermuda is surrounded by coral reefs which make the surrounding waters shallow as the sharks tend to take to deeper water. As far as jelly fish are concerned, the Portuguese Man o' War will ocassionally wash up on the sea shore. I am leaving you a site detailing sea critters in Bermuda. Good luck and have a great time.