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We took our own masks and snorkels to CocoCay and rented the vests. We thought the snorkeling was pretty good. No coral but lots of fish and I saw a stingray. Also, be aware, if you want to go to the "deep" area you are required to wear fins which we did not have. I wish I had known about that requirement because I would have rented them. We did not see 1 jellyfish when we were there in February. I hope this helps!