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    Sea otters' tool use leaves behind distinctive archaeological evidence

    Researchers have analyzed the use by sea otters of large, shoreline rocks as 'anvils' to break open shells, as well as the resulting shell middens. The researchers used ecological and archaeological approaches to identify patterns that are characteristic of sea otter use of such locations. By looking at evidence of past anvil stone use, scientists could better understand sea otter habitat use.

    from All Top News -- ScienceDaily https://ift.tt/2UzJcks

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