Snorkeling the biosphere in Puerto Morelos, Mexico Experience the thrill of 2 snorkeling sites for 45 minutes a piece inside the Puerto Morelos Biosphere a protected reserve for our aquatic friends. You'll see exotic fish, turtules, eal and maybe even a string ray or 2, colors of every variation and a variety of sea life of every size. Snorkeling in Puerto Morelos is truly an amazing experience that will never be forgotten.