If you are ever in a bay in St John I suggest you check out the underside of the floating pay station, where you pay for the mooring each night. I found them to be very colorful and full of life. Everything seemed to be in miniature size. I even saw 4-5 lobsters including the guy below (he is 1.5-2 inches long) who I showed to some young guest before returning. It was an easy and quick way to see sea life.