Third Annual Nantucket Green Crab Week

Tess McCarthy • August 8, 2022

Nantucket, MA – Join the Nantucket Maria Mitchell Association (MMA), Nantucket Land Council (NLC), and Sustainable Nantucket (SN) for the third annual Nantucket Green Crab Week! The MMA, NLC, and SN will be offering fun daily events from August 8th to August 12th to learn about, and take action against, invasive European green crabs on Nantucket.


European green crabs were first introduced to North America in the 1800s, likely traveling the ballast water of merchant ships from Europe. This invasive species is now abundant on Nantucket, threatening crucial aquatic resources, including eelgrass beds, shellfish populations, and native crab communities here on the island. Together, as a community, it is possible to help prevent green crabs from destroying the natural resources that make Nantucket’s waters so special! So please come join us during Nantucket Green Crab Week to learn more.


The Maria Mitchell Association is a private non-profit organization. Founded in 1902, the MMA works to preserve 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.


Nantucket Land Council is a 501(c)3 environmental advocacy organization – protecting and preserving open space, harbor, pond, and groundwater, and advocating for the environment at Select Board, Planning Board, and Conservation Commission meetings. The Nantucket Land Council also hosts the State of the Harbor Forum each year and Oysterfest each November to educate residents on the state of our water resources, and what we can all do to help maintain this critical resource. For more information on the Nantucket Land Council’s environmental work and initiatives, please visit https://www.nantucketlandcouncil.org.


Founded in 2000, Sustainable Nantucket’s mission is to preserve the community character of Nantucket while sustaining its economic and environmental vitality.

Sustainable Nantucket (SN) is a grassroots, local, non-profit organization that is building a more locally-based and self-reliant food system on-island through education, advocacy, training, and partnerships which include farmers, fishermen, local food producers, schools, restaurants, and other community stakeholders.

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Nantucket Green Crab Week Schedule


Monday, August 8th

Green Crab Identification Workshop & Derby Information Session

Maria Mitchell Association Aquarium 1pm-4pm

Join us at the Maria Mitchell Aquarium to learn how to identify green crabs! We will compare them to local species and show you how to tell their sex. This is also a great opportunity to seek advice about the 2nd Annual Nantucket Green Crab Derby! This program is FREE and designed for children ages 5 and up. All children must be accompanied by an adult.


Tuesday, August 9th

2nd Annual Green Crab Derby

Maria Mitchell Association Aquarium 12pm-4pm

Help the Maria Mitchell Association and the Nantucket Land Council fight the green crab invasion by participating in the 2nd annual Nantucket Green Crab Derby! Participate in a team of up to 4 to help us maintain healthy marine habitats and for a chance to win prizes! Rules and prize details are detailed in the reservation process. All eligible crabs must be delivered to the Maria Mitchell Aquarium between 12:00 PM and 4:00 PM on Friday July 16th to be submitted for prizes. Registration is required, click here to learn more.


Wednesday, August 10th

Green Crab Fertilizer Workshop with the Nantucket Land Council

Sustainable Nantucket Community Institute at 168 Hummock Pond Road 10am-12pm

In collaboration with the Nantucket Land Council, please join us for this free, fun, and exciting way to help control the population of the invasive green crab, all while creating an environmentally friendly fertilizer for your garden. For folks to make their own green crab fertilizer, they should bring completely waterproof boots they're comfortable crushing dead crabs with, as well as a sealable bottle or jar to take home their fertilizer. We will provide crabs, coolers, vinegar, and take-home fertilizer instructions. This program is FREE and designed for children ages 5 and up. All children must be accompanied by an adult, click here to register.


Thursday, August 11th

Nantucket Green Crab Survey by Wading & Hand Net

Hither Creek Beach Access (Around 24 Massachusetts Ave.) 4pm-5pm

Join Maria Mitchell Aquarium Director, Jack Dubinsky, on a survey for invasive European green crabs! This survey will be a part of the MMA Nantucket Green Crab Community Science Survey that you can do yourself at any time! In this session, we will be using the wading with hand net method. This program is FREE and designed for children ages 5 and up. All children must be accompanied by an adult, click here to register.


Friday, August 12th

Nantucket Green Crab Survey by Bait & Line

Madaket Beach Parking Lot 11am-12pm

Join Maria Mitchell Aquarium Director, Jack Dubinsky, on a survey for invasive European green crabs! This survey will be a part of the MMA Nantucket Green Crab Community Science Survey that you can do yourself at any time! In this session, we will be using the wading with hand net method. This program is FREE and designed for children ages 5 and up. All children must be accompanied by an adult, click here to register.

For Immediate Release

August 8, 2022

Contact: Tess McCarthy, Communications and Marketing Intern

marketinginterns@mariamitchell.org

Recent Posts

The Birth of the Maria Mitchell Observatory: Celebrating Over 100 Years of Discovery

By Jascin N. Leonardo Finger • June 30, 2025
As we are now complete with the conservation of the historic Maria Mitchell Vestal Street Observatory (MMO), I thought it would be good to post a series of blogs concerning it history and activities, as well as some of the amazing people who have made it what it is over the last 100 plus years. Therefore, over the next few weeks, the focus will be on the MMO. And it is now open for tours – Monday through Saturday 11-1PM. Founded in 1902, the Nantucket Maria Mitchell Association (MMA) had its beginnings in the Mitchell House where Maria Mitchell was born. Over the first few years, the preservation of the Mitchell House, family artifacts, and the collection and display of Nantucket’s native flora and fauna, as well as a small library, were the key components of the MMA. Special “Moon Evenings” were held on the lawn and people observed Nantucket’s night skies using several small telescopes, including William and Maria Mitchell’s two-and-three-quarter-inch Dollond telescope. The popular evenings led to the inevitable – a desire and need to expand based on the demands of the visitors to, and members of, the MMA. In 1906, Lydia Hinchman, a founder of the MMA and a family member, purchased the house and lot adjacent to the Mitchell House. The house – once the home of William Mitchell’s father and mother – was taken down. The MMA began a dialogue with the Harvard College Observatory and its director, Edward Pickering, Ph.D. The connection to Harvard was to become essential to the success of the beginning years of the Maria Mitchell Observatory and continued a legacy of friendship and work – Maria Mitchell and her father worked with the Bonds who once ran the observatory at Harvard and the families were close friends. Besides his assistance, Pickering asked a member of his staff, Annie Jump Cannon, to assist the MMA. This “provided an indispensable collaboration for Nantucket astronomy,” with Cannon spending two weeks on the island in 1906 and 1907 lecturing and teaching. While back at Harvard, she continued to teach the students on Nantucket by mail. Cannon would go on to be recognized as the leading woman astronomer of her generation and as the founder of the MMA’s Astronomy Department. JNLF

Putting Things By

By Jascin N. Leonardo Finger • June 23, 2025
An older term, that we seem to not use that much anymore but maybe that’s in part because not many people “put things by” anymore. It is having a bit of a resurgence as people try to return to the garden and focus on local produce. My in-laws used to spend a lot of time – before I knew them – canning and preserving many different things – from jellies to string beans that became “dilly beans.” I, on the other hand, do not can produce. Frankly, I fear messing up the process and making my family sick. So, for now, I stick to making refrigerator jams and pickles. I have made some chive vinegar – that is frankly, amazing, and a brilliant shade of pink! But in any case, Bartlett’s Farm opened for pick-your-own strawberries on June 7 and I made my way over on June 8. My son has been asking for strawberry jam since about February – I told him I wait for fresh and local but he wanted some so badly he was begging for store bought. I almost caved but then I told him – out of season and they taste like cardboard – and also made a LONG journey to get to us. Once people ate with the seasons – now we do not have to with trains, planes, and ships crossing all over. It is also, why, oftentimes, fruit has no flavor. Produce is picked often before it ripens and “ripens” as it ships – or with sprays – and since many varieties have been crossed with others or engineered, we have lost the taste. I remember tasting a peach a few years back from North Carolina – fresh off the tree. After rubbing it to get all the “fur” off, I bit into an exquisite peach that tasted like a peach of my youth. So, Maria was not eating a strawberry in January but she was eating them in June – local and full of flavor. And likely, putting some by as well. JNLF

Maria Mitchell In Her Own Words

By Jascin N. Leonardo Finger • June 16, 2025
June 1851 My Dear Sister . . . . Mrs. Dassel has painted me kneeling at my telescope. It looks like Adeline Coffin and is of course not handsome. If thee was here thee would have Mitchell’s {William Mitchell Barney, son of Sally and Matthew Barney} painted at once. She has a head of a child N. P. Willis that is very lovely. She has taken a room at the Atheneum and put up about a dozen pictures – very beautiful – Isabel is lovely. She has not tried to make a portrait, but a very pretty picture . . . . She is now engaged on Abra’m Quary – he is much flattered by it and it will be a fine portrait. I think we shall buy it or a copy for the Atheneum . . . . She will paint father also for herself – having made a pencil sketch . . . .We like her very much . . . . The above is from a letter sent by Maria Mitchell to her eldest sister, Sally Mitchell Barney. In it, Maria details what everyone in the Mitchell family is up to. She includes some details about Herminia B. Dassel, an artist who came to Nantucket to paint the last Native Americans and also took an interest in the famous Mitchell family. This was of course four years after Maria’s discovery of the comet. At the time of this letter, Maria was still the librarian for the Atheneum and the portrait of Quary that she mentions possibly buying for the Atheneum, she did buy as it hangs in the Atheneum by the front door today. Another Dassel portrait of Quary is in the collection of the Nantucket Historical Association and the portrait of Isabel Draper is currently on display at the NHA’s Whaling Museum – on loan from a museum in Rhode Island. The portrait Maria states she posed for at the start of the letter is in the collection of the MMA. It was given to us in the early 1990s by Sally’s great granddaughter – the granddaughter of Mitchell whom she mentions above as well. Maria and Dassel would become good friends – Maria was named the godmother of Dassel’s daughter. And the sketch of William made by Dassel that Maria states would become a portrait? It likely did come to fruition. It made its way down a side of the family but was unfortunately lost, likely sold as part of a family estate though we do have a photograph of it and one can tell it is the brush work of Dassel. JNLF
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