Alaska crab fisheries harvest species such as Bristol Bay red king crab and Bering Sea snow crab. NOAA Fisheries describes the Bristol Bay red king crab stock as having highly variable abundance over more than 50 years, with earlier closures, while Bering Sea snow crab declined more suddenly.[1]

| Main stocks | Bristol Bay red king crab; Bering Sea snow crab |
|---|---|
| Red king crab abundance | Highly variable for more than 50 years |
| Snow crab decline | Linked to a 2019 marine heatwave |
| Management | Fishery Management Plans under the Magnuson-Stevens Act |
Stock declines
In an October 2022 statement, the director of science for NOAA’s Alaska Fisheries Science Center said the decline of Bristol Bay red king crab is part of a history of highly variable abundance that has included earlier fishery closures. The snow crab decline was more sudden and linked to extreme oceanographic events; a 2019 marine heatwave likely affected adult and juvenile snow crab survival through starvation, disease, migration and predation.[1]
Management
NOAA Fisheries uses an ecosystem-based approach to assess environmental and climate influences on stock production. Survey and fishery data and stock assessments have been collected with State of Alaska partners since the 1970s, and management follows Fishery Management Plans under the Magnuson-Stevens Act. Stock assessments undergo public peer review that includes external experts.[1]
FAQs
What crabs are fished in Alaska? Red king crab and snow crab are among the main Bering Sea species.
Why did snow crab decline? NOAA links it to extreme oceanographic events, including a 2019 marine heatwave.
Who manages the fisheries? NOAA Fisheries and the State of Alaska under federal management plans.
Sources
Key facts
- Red king crab variable for 50+ years
- Snow crab decline 2019 heatwave
- Assessments since the 1970s
Quick checkWhat affected snow crab?Show answer
A 2019 marine heatwave, according to NOAA.
Sources
- NOAA Fisheries. Statement on Alaska crab stock declines. 2022 (accessed 2026-11-12)
Editorially reviewed by Specialty Digest Editorial TeamLast reviewed November 12, 2026Researched and drafted with AI assistanceReport an issue