Gray whales on the North American Pacific coast fell this year to their lowest population since the late 1960s and early 1970s, but have also shown encouraging signs such an increased number of calves born and healthier looking animals, scientists report.
The gray whales are a majestic component of the West Coast ecosystem, visible from the coastline as they migrate thousands of miles back and forth between Alaskan waters and the lagoons of Baja California Sur in Mexico, where they birth and mate.
The most recent estimate of their population is 14,526 from the 2022-23 southward winter migration, a number comparable to those from 1968-1970, among the lowest since records began in 1967, the National Oceanic and Atmospheric Administration said in a report published on Tuesday. All three of those numbers have fallen from a peak estimate of 28,790 in 2014-15, when confidence limits ranged from 23,6230 to 39,210. A severe drop-off began in 2019, when NOAA Fisheries declared an Unusual Mortality Event as gray whale strandings surged.
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