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Rocky intertidal shore at Antofagasta Bay. (A) Extended intertidal belts of P. praeputialis covered by Ulva spp. (green). (B) Close-up of P. praeputialis clumps, showing patches created by storms. (C) P. praeputialis (green, low-mid intertidal) and Perumytilus (violet, mid-upper intertidal) belts. (D) P. praeputialis collection for bait and food by an intertidal food-gatherer during low tide.
