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Evidence for the greater antiquity of kelp forests, reported this week in the journal Proceedings of the National Academy of Sciences, comes from newly discovered fossils of the kelp's holdfast -- the root-like part of the kelp that anchors it to rocks or rock-bound organisms on the seafloor.

While the people who flocked to the Pacific to enjoy a rare 80F beach day soaked up the sun, so did the mussel beds – where the rock-bound mollusks could have been experiencing temperatures above 100F at low tide, literally roasting in their shells.

Peter had taken a short cut up the steep rock-bound side of the hill.

It might also be the reaction product of water, rock-bound minerals, and ultraviolet radiation.

The eye ranges over a wilderness of fantastic-shaped mountains, some shooting up sharp as arrows, others round and ridgy, separated by sinuous sea-lochs and glittering tarns,—a land of awful ruggedness and desolation,—of rock-bound shores cleft into myriad bays and fiords by the thundering almost ever restless northern sea that beats against them.