October 23, 2023 — About 10 billion snow crabs disappeared from Bering Sea waters between 2018 and 2021, forcing fisheries to shutter in Alaska last winter and threatening the state’s economy. Now, scientists think they know what happened to them.
A study published Thursday in the journal Science suggests that the crabs likely suffered a mass starvation event touched off by seasons of extreme ocean heat.
The population crash — from its highest-recorded level in 2018 — shows how marine heat waves, which are made more likely by climate change, can scramble ecosystems and threaten human livelihoods that rely on ocean life.