Oceans; Whales; Wildlife; Mammals; Arctic; California; Species; Shipping; Marine life; Pacific Ocean; San Francisco; Ships Sealife; Wildlife monitoring; Archives

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Oceans; Whales; Wildlife; Mammals; Arctic; California; Species; Shipping; Marine life; Pacific Ocean; San Francisco; Ships Sealife; Wildlife monitoring;

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Gray whales have unique markings, making it possible to track each one in the bay.Jane Tyska/Digital First Media/East Bay Times…