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Often longer than a school bus and weighing 30 to 40 tons, gray whales move in large pods visible from the California coast as they travel more than 12,000 miles from Mexico to Alaska and back. Unique among its fellow baleen whales, the gray whale feeds along the ocean floor, using the side of its mouth to suck up all the krill and sediment in its path. However, rises in sea temperature have degraded the gray whale's Arctic feeding grounds, so that a food supply formerly estimated to support 90,000 whales can no longer feed even the estimated 22,000 roaming the Pacific Ocean

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14y ago

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