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Gray Whale Condition and Calf Production

We estimate the number of gray whale calves born each year and assess the whale body condition during their northward migration in the spring. These surveys are essential to tracking the status of the eastern North Pacific gray whale population.

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Aerial view of the Nisqually River Basin at sunset Tidal wetlands in the Nisqually River Basin, where restored habitat fosters growth of juvenile salmon and steelhead on their way to the ocean.
A NOAA aerial survey crew gathers in front of a NOAA Twin Otter aircraft during a stop in Astoria, Oregon. A NOAA aerial survey crew gathers in front of a NOAA Twin Otter aircraft during a stop in Astoria, Oregon in 2014. From left: Lt. Michael Sandor Silagi, Office of Marine and Aviation Operations; Joel Schumacher, Scott Benson, and Tomoharu Eguchi, Southwest Fisheries Science Center; Camryn Allen, Pacific Islands Fisheries Science Center; Dan Prosperi, Southwest Fisheries Science Center; and Lt. Shanae Coker, Office of Marine and Aviation Operations.