Find Nemo. Go nose-to-nose (through glass) with Moray eels, sharks, and loggerhead turtles. Touch a ray. A day at the Long Island Aquarium, in Riverhead, can show you the wonders of the watery element without leaving sand in your shoes for the ride home. No expiration. 431 East Main Street, Riverhead, NY. www.longislandaquarium.com