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In the cold, choppy waters of Alaska’s Resurrection Bay, all eyes were on the gray water, looking for one thing only.

An ocean first: Underwater drone tracks CO2 in Alaska gulf

SEWARD, Alaska (AP) — In the cold, choppy waters of Alaska’s Resurrection Bay, all eyes were on the gray water, looking for one thing only. It wasn’t a spout from humpback whales that power through this scenic fjord, or a sea otter lazing on its back, munching a king crab.

Until now, measuring CO2 concentrations — a quantifier of ocean acidification — was mostly done from ships, buoys and moorings tethered to the ocean floor.

Until now, measuring CO2 concentrations — a quantifier of ocean acidification — was mostly done from ships, buoys and moorings tethered to the ocean floor.