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Ground, vessel, and photographic Northern Elephant Seal counts collected on the Pacific coast of North America from 1981 to 2023 (NCEI Accession 0307611)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: January 29, 2026 | Last Modified: 2025-09-09T00:00:00.000+00:00
Ground, vessel, and aerial counts of northern elephant seals at breeding sites in California and the California Channel Islands. Aerial surveys were conducted at 800-1400ft above ground level (AGL) with either film or digital camera and analyzed post survey by creating mosaics and counting individuals with 1-3 observers. Counts for northern elephant seals are collated into one CSV.

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