Marine Mammal Stock Assessment Reports
NOAA Fisheries annually prepares marine mammal stock assessment reports. Below are the 2021 Marine Mammal Stock Assessment Reports.
2021 Marine Mammal Stock Assessment Reports
- Alaska Marine Mammal Stock Assessments (PDF, 304 pages)
- U.S. Atlantic and Gulf of Mexico Marine Mammal Stock Assessment (PDF, 386 pages)
- U.S. Pacific Marine Mammal Stock Assessment (PDF, 393 pages)
NOAA Fisheries prepares marine mammal stock assessment reports annually, as directed by the Marine Mammal Protection Act. The reports are prepared in consultation with one or more of three regional Scientific Review Groups.
NOAA Fisheries currently tracks 259 stocks of marine mammals and have an associated Stock Assessment Report for each species. In 2021, we updated information for 50 stocks.
In the 2021 reports, three stocks (all Northern Gulf of Mexico Bay, Sound, and Estuary Common Bottlenose Dolphin stocks) changed in status from ‘strategic’ to ‘non-strategic’ (Galveston Bay, East Bay, Trinity Bay stock; Mississippi River Delta stock; and Sabine Lake stock). Strategic Stock is defined by the MMPA as a marine mammal stock:
- for which the level of direct human-caused mortality exceeds the potential biological removal level;
- which, based on the best available scientific information, is declining and is likely to be listed as a threatened species under the ESA within the foreseeable future; or
- which is listed as a threatened or endangered species under the ESA, or is designated as depleted under the MMPA.