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MSc Applied Aquatic Biology Student | PADI Divemaster | Freelance Photographer

Seagrass & Such Series: A Closer Look- Sea Otters as a Keystone Species in Kelp Forests. Sea otters were previously hunted by humans and by the 1900’s this lead to a significant drop in their population. Following protection measures, hunting declined and sea otters numbers began to increase once again. Scientists were able to observe their reintroduction to their kelp forest habitat and how their return affected their surrounding environment. The number of sea otters plummeted again in the 1900’s, this is believed to be due to being hunted by orcas. Their usual prey of sea lions and whales became scarce due to overfishing therefore they turned to the sea otter population for sustenance. Alongside the once again decline in number of sea otters, sea urchins were left unchecked, meaning they were able to rapidly reproduce, biting through the holdfast or roots of the kelp. Whilst conducting research in Alaska, the scientist James Estes confirmed that sea otters are a keystone species. Their role in their environment is crucial in ensuring their habitat is balanced, one species not outcompeting another. https://bit.ly/49jBouf Daniel Terrell / Pexels #seagrassseries #ocean #oceanconservation #marinebiology #oceanecosystems #kelpforests #marinehabitats #seaotters

  • Close Up of otter laying on his back in sea water munching through kelp, sunlight shines off his fur.

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