Located on 3.2 scenic acres along the Peconic River in downtown Riverhead, Long Island Aquarium has been inspiring and entertaining visitors since 2000. Its remarkable collection of indoor and outdoor exhibits includes the Lost City of Atlantis Shark Habitat, a 20,000-gallon living coral reef, playful sea lions, African penguins, river otters, seals, stingrays, butterflies and fascinating wildlife from around the world. Guests can enjoy daily presentations, hands-on touch tanks and unforgettable interactive adventures—from feeding stingrays and meeting penguins to snorkeling, shark diving and seasonal educational cruises along the Peconic River. Combining family fun, discovery and a commitment to marine education and environmental preservation, Long Island Aquarium is one of the East End’s most distinctive year-round destinations.