One of my favorite shore dives in New England is a site in Portsmouth, New Hampshire called Peirce Island on the Piscataqua River. The Piscataqua River is technically not a river at all but a tidal estuary that has some of the fastest moving currents in the United States (around 4 knots 7.4 km/h; 4.6 mph according to Wikipedia) at it’s full force. As such this dive site can only be dove at slack tide after carefully evaluating currents. You typically can only do one dive here before the currents are too strong.…
Diving Peirce Island & nudibranchs
