The shark ray alley tour on Carnival is a 6 hour snorkeling tour on the Belize barrier reef between the islands of Caye Caulker and San Pedro. This tour cost about $90.00 us per person. I Colin Gillett of Royal Mayan Adventures can give you this same tour for $70.00 us per person (25% less ) with more fun as I take you to two locations instead of one and you recieve the personal V.I.P. treatment as only Royal Mayan Adventures can. Visit the website www.royalmayanadventures.bz for more details. I thank you.