Uploaded June 2026 | Updated September 2026, 3 hours ago

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Alaska is home to some of the richest marine wildlife on Earth, but a mystery is unfolding beneath its waters. Steller sea lions, sea otters, harbor seals, and other marine animals have suffered dramatic population declines, leaving scientists searching for answers. Subscribe to Our World: bit.ly/3xnPuGL

In the Pacific Northwest entire ecosystems are collapsing. This beautifully shot documentary seeks clues in the oceans of South East Alaska to the dramatic decline in the world's marine life.

This film was first broadcast: 01 Apr 2003

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Explore Our World and watch some of the most successful nature documentary series about the environment and the wonders and dangers nature has to offer. We will be posting some of the longest-running and most successful nature documentary series, revealing the trials and tribulations of life on Earth and often for the first time, the secrets of the natural world in all its wonder.

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#sealions #alaska #wildlife