US Coast Guard Station/Hart's Cove
Conditions & tides
Scored by DiveConnect's site-physics model
Marine forecast via Copernicus Marine. Score is a rule-based guide from swell/wind vs. the site's exposure — always dive your own assessment.
Dived here today? How were conditions vs. what we showed?
About this site
This site lies near New Castle, New Hampshire, at the mouth of the Piscataqua River along the coast of the Gulf of Maine. The area sits close to the historic harbor defenses and Coast Guard installations that have long watched over the river entrance near Portsmouth.
AI overviewMarine life here
Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.
European Green CrabCarcinus maenasReported here · unconfirmed
Asian Shore CrabHemigrapsus sanguineusReported here · unconfirmed
Long-claw Hermit CrabPagurus longicarpusReported here · unconfirmed
Chain TunicateBotrylloides violaceusReported here · unconfirmed
Jonah CrabCancer borealisReported here · unconfirmed
Durable tips from divers — access, hazards, marine life, facilities. For day-of conditions, use the report tool in the conditions card above.
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