Snorkeling at the Long Island Aquarium
431 E. Main St., Riverhead Get directions
No, not in the Great South Bay — but in the crystal-clear waters at the Long Island Aquarium in Riverhead. The attraction’s outdoor Pirate Snorkel Adventure tank teams with fish, sting rays and even some (harmless) sharks. For about $60, you can don a mask and take a 45-minute swim among the sealife in the large saltwater tank (8 feet at its deepest).