Scientists spot rare whale in Bering Sea In this Sunday, Aug. 6, 2017 photo provided by NOAA Fisheries a North Pacific right whale swims in the Bering Sea west of Bristol Bay. (NOAA Fisheries via AP)
Scientists spot rare whale in Bering Sea
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Federal researchers studying critically endangered North Pacific right whales sometimes go years without finding their subjects. Last weekend they got lucky.

A research vessel in the Bering Sea photographed two of the animals last Sunday. It obtained a biopsy sample from one. That announcement came from the National Oceanic and Atmospheric Administration last Thursday.

NOAA Fisheries research biologist Jessica Crance was on board the Yushin Maru 2. That is the ship where the whales were spotted. The ship is part of the Pacific Ocean Whale and Ecosystem Research program. The program is a collaborative effort headed by the International Whaling Commission. 

Crance picked up faint calls of a right whale east of Bristol Bay, Alaska. She used an acoustic recorder. She listened between sounds of killer whales and walrus.

The sounds came from an estimated 10 to 32 miles (16 to 51 kilometers) away. The ship headed west, she said in a blog entry. After four and a half hours, the rare animals were spotted. This happened despite the presence of minke and humpback whales, and only a few calls from the right whales. 

The two right whales are part of the eastern stock. It numbers just 30 to 50 whales. That's according to Phillip Clapham. He is head of the cetacean program at NOAA's Alaska Fisheries Science Center in Seattle.

A French whaling ship recorded the first kill in 1835 and reported seeing "millions" of others. That claim was exaggerated but it drew hundreds of other whalers to the Gulf of Alaska and the Bering Sea, Clapham said.

Within 14 years, Clapham said, the overharvest of the slow, buoyant animals sent many whalers through the Bering Strait to hunt bowhead whales instead.

A modest comeback of right whales in the 20th Century was derailed when Soviet whalers in the 1960s ignored critically low numbers and illegally killed eastern stock right whales in the Gulf of Alaska, Clapham said.

The right whale sampled Sunday had been seen eight times before, Clapham said. The last time was a decade ago. A biopsy sample, he said, can positively identify the animal, reveal its gender, indicate whether it's pregnant and reveal information on diet and reproductive hormones.

Studying North Pacific right whales is complicated by the expense of reaching their habitat in the Gulf of Alaska and the Bering Sea. Critical data remains unknown, including their winter habits and many of their preferred summer feeding areas for copepods, a tiny crustacean plankton.

"We don't know what habitats continue to be important to the species," Clapham said.

The biggest threats to the animals are fishing gear entanglements and ship strikes, Clapham said.

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CRITICAL THINKING QUESTION
Why do scientists use an acoustic recorder?
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COMMENTS (2)
  • Abigailm-dav
    8/28/2017 - 09:20 a.m.

    A summary of "Scientists spot rare whale in Bering Sea," is in paragraph one they start to talk about how some of these scientists go years without finding anything they are looking for. Next they start to state how a woman named Jessica Crance was on the boat when finally one of the whales they have been searching for was spoted. Then the article has some information of before this time period with how they were hunted and how they started spoting less and less over the years. I disagree with them hunting these whales. Although this was their food it still doesn't do good to hunt so much they are almost all gone! After this statment they end the article with information about the whale with what it eats and other information.

  • jackiek-orv
    8/29/2017 - 11:48 a.m.

    I agree that the whale found was a very rare and endangered. One reason I agree is that they say it is over hunted and caused it's mass deaths. Another reason is that they were hunted for food when times were tough.

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