In a few moments he was barefoot, his stockings folded in his pockets and his canvas shoes dangling by their knotted laces over his shoulders and, picking a pointed salt-eaten stick out of the jetsam among the rocks, he clambered down the slope of the breakwater.
There are no more uses of "jetsam" in the book.
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On a reconnaissance foray into the bowels of the great closet that harbored the jetsam and flotsam washed into the schoolroom over the years, I unearthed a brand-new automatic movie projector.
Pat Conroy -- The Water is Wide
The place was a back eddy, a pool of jetsam beyond the pull of the main current, and that suited him just fine.