New nonstop JetBlue flights from New York’s JFK and Boston’s Logan airport to Grand Cayman (from $350) make the Caribbean snorkel and scuba hot spot more accessible than ever. Even better: the island recently added two new dive sites. Red Sail Sports guides clients through the Kittiwake, a 251-foot decommissioned U.S. Navy ship sunk two years ago to create an artificial reef, as schools of horse-eye jack and goliath grouper flutter nearby (from $95). For a more advanced dive (and to escape the resort crowds), join Red Sail for a 15-minute trip to Lost Wall, where a 100-foot plunge down a sheer wall puts you face to face with turtles and reef sharks. Snorkelers head to Stingray City, where 10-foot stingray are tame enough to touch. At night, settle into the Westin Grand Cayman Seven Mile Beach Resort and Spa (doubles from $429).