Atlantis Marine World Aquarium announced on June 15—the 11th anniversary of its opening on East Main Street in Riverhead—that it is changing its name to Long Island Aquarium and Exhibition Center and will be opening its new Long Island Exhibition Center, the 70,000-square-foot Hyatt Place East End and Treasure Cove Resort Marina, on July 1, followed by the new Sea Star Grand Ballroom later this summer.
The new $24 million expansion, which has been five years in design development—working with the town, the state and the county—includes the 28,000-square-foot Sea Star Grand Ballroom that can accommodate up to 450 guests. The suite-style Hyatt Place hotel has 100 rooms.
“Where else on a Long Island Main Street do you see an internationally recognized hotel?” said co-owner Joe Petrocelli. “Additionally, there is no indoor exotic butterfly and bird exhibit anywhere in this region that is open year-round,” he said, referencing the Exhibition Center’s first exhibit that will be changed every few years for variation.
The aquarium is open every day from 10 a.m. to 5 p.m., year-round ,and is located adjacent to the Hyatt Place East End hotel. It is also the home of the Riverhead Foundation for Marine Research and Preservation, New York’s only authorized marine mammal and sea turtle rescue and rehabilitation center. The aquarium was recently ranked by Parents Magazine as one of the “Top Aquariums for Kids.”