Research Confirms Link Between Snow Crab Decline and Marine Heatwave – NOAA Fisheries

Snow Crab detail (by NOAA Fisheries, public domain).

“During the marine heatwave, snow crabs faced a triple threat,” said lead author and Alaska Fisheries Science Center stock assessment scientist Cody Szuwalski. “Their metabolism increased, so they needed more food; their habitat was reduced so there was less area to forage; and crabs caught in our survey weighed less than usual. These conditions likely set them up for the dramatic decline we saw in 2021…”