Nantucket Land Council, Inc.
- Protecting and preserving the islands' natural resources. Information on activities and membership is provided, along with a newsletter.
- http://www.nantucketlandcouncil.org/

Nantucket Conservation Foundation
- Focused on preserving natural areas and habitats on the island. Find membership information, maps of preserved lands, and background on plants and animals.
- http://www.nantucketconservation.com/

Coskata-Coatue Wildlife Refuge
- Conservation organization provides information on its programs and natural history tours.
- http://www.thetrustees.org/pages/293_coskata_coatue_wildlife_refuge.cfm

Nantucket Beach Foundation, Inc.
- Organization dedicated to environmentally restoring, preserving and protecting the island's beaches. Includes ground-based and satellite photos, information about beach erosion and coastal ecology, fishing advice, and organization news.
- http://www.nantucketbeach.org/

Northeast Coastal Areas Study Significant Coastal Habitats: Muskeget and Tuckernuck Islands and Muskeget Channel
- Project map, general habitat description, signifiance and uniqueness of area, environmental threats and conservation considerations, from the EPA's National Estuary Program.
- http://training.fws.gov/library/pubs5/necas/web_link/39_muskeget.htm

Northeast Coastal Areas Study Significant Coastal Habitats: Miacomet Moorlands
- Project map, general habitat description, signifiance and uniqueness of area, environmental threats and conservation considerations, from the EPA's National Estuary Program.
- http://training.fws.gov/library/pubs5/necas/web_link/38_miacomet.htm