Great Bay National Estuarine Research Reserve
- Promotes the wise use and management of Great Bay Estuary. Includes information about the Sandy Point Discovery Center. Programs, natural history, event schedule, research projects, educational resources, contacts, and stewardship opportunities.
- http://www.greatbay.org/

Blue Ocean Society
- Non-profit organization dedicated to promoting conservation of the marine environment. Information on research projects, education programs, whale watches, volunteer and internship opportunities, and events calendar.
- http://www.blueoceansociety.org

Piscataqua-Salmon Falls Watershed Profile
- Environmental information and reports for the watershed area. Maps, statistics, message boards, and related links.
- http://cfpub.epa.gov/surf/huc.cfm?huc_code=01060003

Tide Charts - New Hampshire Seacoast
- Offers six months of tide predictions for several points along the NH coastline. Also lists links to charts for other New England ports, FAQs, and marine forecasts.
- http://www.maineharbors.com/nh/tidenh.htm