Tulum, Mexico May 2011 Deposit $500.00 Snorkeling Single (S) $2,150.00 Snorkeling Double (D) $1,550.00 Open Water Cert (S) $3,195.00 Open Water Cert (D) $2,050.00 Advanced Cert (S) $3,095.00 Advanced Cert (D) $1,950.00