#massachusetts

2 articles

Cape Ann: Kelp Ledges and Old Granite on Massachusetts' North Shore

Cape Ann, north of Boston, is old granite meeting cold Atlantic water — sugar kelp ledges, famous shore dives and a coast living at kelp's warming edge.

Tom Okafor · September 26, 2026

Sunlit sugar kelp forest swaying over granite boulders in the clear green water of Boston Harbor, with green sea urchins on the rock and schooling fish in the canopy

Atlas9 min read

Boston Harbor Islands: Kelp's Comeback Beside a Cleaned-Up City

Boston's harbor went from punchline to one of America's cleanest urban seas, and kelp came back with it. A guide to the islands' underwater forests.

Dr. Lena Fischer · June 14, 2026

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