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  1. Tool use by sea otters - Wikipedia

  2. Using tools helps sea otters survive as the ocean changes and …

  3. Ten Facts about Sea Otters | Blog Posts | WWF - World Wildlife …

  4. Sea otters use tools when feeding to survive a changing world

  5. Otters use tools to eat, and it’s recording their history | CNN

  6. Using archaeology to uncover sea otters’ historical habitats

  7. Sea otter uses rock as hammer underwater - Jon Anderson …

  8. The Quest for an Archaeology of Sea Otter Tool Use

  9. Sea otters' tool use leaves behind distinctive ... - ScienceDaily

  10. Sea Otters - NWF | Ranger Rick