Explore New Hampshire's beautiful Great Bay Estuary or Appledore Island at the Isles of Shoals with NH Sea Grant and UNH Cooperative Extension's Marine Docent volunteer guides. We offer two different types of cruises throughout the summer.

Explore Appledore Island

Spend the day on Appledore Island, one of the nine beautiful Isles of Shoals off the coasts of Maine and New Hampshire, and home of the Shoals Marine Laboratory.

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Appledore Island

Great Bay EcoCruise

Join fellow explorers on an activity-based cruise from New Castle, NH up the Piscataqua River into the Great Bay Estuary and to the Jackson Estuarine Laboratory.

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Folks measuring water temperature on the RV Gulf Challenger

Watch our Cruise video to learn more about this one of a kind experience!

Questions? Contact our main office: 

Phone: (603) 862-6700