When we were in the Cayman Island we swam with the stingrays. This was an unforgettable experience. They are big and intimidating but feel like velvet.
Everyone got a nice back rub from one of the stingrays. We fed them squid, with instructions on how to hold the piece of squid. If felt like a vacuum cleaner hose when the stingray sucked up the squid.
It is said that if you kiss a stingray you will have 7 years of good luck. So far so good:)