U.S. researchers say the number of gray whales off western North America has continued to fall over the last two years, a decline that resembles previous population swings over the past several decades
. According to an assessment by NOAA Fisheries released Friday, Oct. 7, 2022, the most recent count put the population at 16,650 whales — down 38% from its peak in 2015-16. According to an assessment by the National Oceanic and Atmospheric Administration Fisheries released Friday, the most recent count put the population at 16,650 whales — down 38% from its peak in 2015-16. The whales also produced the fewest calves since scientists began counting the births in 1994.
The population recovered from the days of commercial whaling before a similar population drop of 40% occurred in the late 1980s and early 1990s. Gray whales were removed from the endangered species list in 1994. Scientists say that although the current population swing so far fits within historical patterns, it's nevertheless concerning.
Researchers count the whales as they return from their summer feeding grounds in the Arctic to the Baja Peninsula lagoons where they nurse their calves in the winter. Typically, the counts are conducted over a two-year period, but to better monitor the population, NOAA Fisheries is adding a third year to the current survey, counting the whales as they pass the central California coast from late December to mid-February 2023.
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