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Marine Mammal Acoustic Technical Guidance

2018 Revision to: Technical Guidance for Assessing the Effects of Anthropogenic Sound on Marine Mammal Hearing

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Two humpback whales swimming underwater. The water is very blue, and the surface is visible just above their heads. Humpback whales swimming underwater. Credit: Kogia.org
A Gulf of Mexico Bryde’s whale just under the surface of the water. Photo: NOAA Fisheries NMFS ESA/MMPA Permit No. 21938. A Rice’s whale just under the surface of the water in the Gulf of Mexico. This endangered whale was recognized as a separate species from the Bryde’s whale in 2021. Credit: NOAA Fisheries under NOAA Permit No. 21938.
Pair of bottlenose dolphins Pair of bottlenose dolphins. Credit: NOAA Pacific Islands Fisheries Science Center/Lisa Morse.