The Nantucket Maria Mitchell Association (MMA) will host its annual Aquarium Release Day on Saturday, October 10, 2026 from 10am to 12 noon at the MMA Aquarium at 32 Washington Street. A sensory-friendly half hour will be offered from 9:30 to 10am.
Join MMA staff to help the staff release this season’s Aquarium inhabitants back into the ocean. This community event is FREE to the public and a great opportunity to learn and celebrate the marine life that lives in the waters of Nantucket Island.
The MMA Aquarium is dedicated to educating the public on the importance of biodiversity in our unique marine ecosystems found here on Nantucket. Each summer, the MMA Aquarium Manager, Chelsea Petrik, as well as her team of dedicated college interns and volunteers, explore the shores of Nantucket to find and document an assortment of over 7,500 individual marine animals, most of which are recorded and released. They snorkel, seine, and beachcomb to collect over 300 different marine animals. The animals are studied and cared for at the Aquarium so that the MMA can help people to learn more about these important marine organisms. Roughly seventy different species are featured at the Aquarium throughout the season. Local fishermen also provide the Aquarium with species they come across in their nets and at the end of their lines.
Pre-registration is encouraged at MariaMitchell.org
The Nantucket Maria Mitchell Association is also leading Scalloping Field Trips and Special Scalloping Experiences during October and November. These hands-on, educational experiences invite participants to explore the island’s coastal waters alongside MMA Aquarium staff while learning about the ecology and conservation of Nantucket’s bay scallops.
MMA Aquarium Manager Chelsea Petrik leads the excursions heading into the water to collect scallops while learning about their biology, life cycle, and the challenges bay scallops face in today’s changing environment. Hand nets and adult waders will be provided. A shellfish permit is required to participate if attendees wish to take their catch home.
Scalloping Field Trips meet at one of multiple locations along Nantucket Harbor to account for changing scallop availability. Registrants will be notified of the exact location via email before the day of the program. Personal transport to and from the meeting location is required to participate. Dates of the trips are October 1 ,3, 4, 7, 8, 14, 17, 18, 21, 23, 24, 28, and 31; November 1, 4, 6, 12, 14, 15, 18, 21, and 22. Cost per Participant: $50
In addition to the MMA’s regular Scalloping Field Trips, the MMA will offer “The Great Scallop Hunt, an
Island Immersion” on Friday, October 2, and Saturday, October 3. These special, separately ticketed experiences invite participants aboard Captain Bruce Beebe’s boat for an insider scalloping expedition on Nantucket Sound. Guests will harvest, shuck, and savor fresh Nantucket Bay scallops alongside Captain Beebe, with a picnic lunch and beverages included.
Only six spots are available for each of these exclusive opportunities to discover Nantucket with Bruce Beebe, exploring the island’s most cherished traditions and hidden corners. Pre-registration is required. Tickets are $500 per person, with $250 of the ticket price tax-deductible.
The Maria Mitchell Association is a private non-profit organization. Founded in 1902, the MMA works tocpreserve the legacy of Nantucket native astronomer, naturalist, librarian, and educator, Maria Mitchell. The Maria Mitchell Association operates two observatories, a natural science museum, an aquarium, a research center, and preserves the historic birthplace of Maria Mitchell. A wide variety of science and history-related programming is offered throughout the year for people of all ages.