BBC’s One Planet falsely claims that polar bears hunting whales from shore is an unprecedented effect of climate change

Reposted from Polar Bear Science

Posted on November 30, 2019

Polar bears leaping on the backs of belugas off Seal River, in western Hudson Bay, is being falsely promoted by the BBC’s new “Seven Worlds: One Planet” TV special as an unprecedented effect of climate change.

More specifically, the Daily Mail (30 November 2019) this morning quoted the documentary, narrated by Sir David Attenborough, as saying:

‘This extraordinary behaviour has only been recorded here, in this remote corner of North America, and only in the last few years.’

Poppycock. More climate change hyperbole from Attenborough’s seemingly never-ending litany of nonsense that’s easily refuted. There is scientific literature documenting such behaviour in Canada’s far north in the 1980s, which I included in the blog post I wrote about this phenomenon a few months ago (after National Geographic published a similar scare-story), which I have reposted below.

And from the sounds of it, there was no mention in the BBC special that freeze-up along western Hudson Bay was early again this year: for the third year in a row. So if the footage was filmed any time since 2017, the claim of accelerating sea ice loss in this region and bears on land for longer than ever is pure fantasy. PS. Fat bears are not ‘starving’.

Reposted from May 6, 2019

This time National Geographic’s ‘Hostile Planet’ series laughably claims a fat polar bear that’s caught a beluga calf off the coast of Western Hudson Bay has been saved from starvation! The message: here is a prime example of climate change pushing a species to its limit. This is nonsense, of course: polar bears hunting beluga whales from rocks has nothing to do with climate change or desperately hungry bears. More importantly, there is a much better video of the action that is both more informative and truthful.

See both below and decide which you’d prefer your kids or grandkids to watch.

National Geographic footage with focus on climate change

First, here is the polar bear sequence from the ‘Hostile Planet’ series, which it has clearly released for distribution to the media:

Applying standard media hyperbole, Rolling Stone Magazine rephrased this to read “See a Starving Polar Bear Hunt for Beluga Whales” as if viewers can’t see the rolls of fat on this bear with their own eyes. Says Rolling Stone, 6 May 2019 [links in the original, my bold]:

“Some scientists fear a third of the polar bears in the world may be gone by 2030 due to climate change and how it will affect future sea conditions. To show how the species is struggling to survive as they search for food, National Geographic captured a moment where a starving polar bear hunts a pod of beluga whales in open water in Canada’s Hudson Bay. Featured in Hostile Planet‘s finale on Monday, it’s a chilling a reminder of how the Arctic predators are desperate to find prey to meet their needs.

The six-part nature docuseries, hosted and narrated by Bear Grylls, zooms in on the world’s most extreme habitats to reveal the animal kingdom’s most dramatic stories of survival on our changing planet.

The Hostile Planet series finale airs tonight at 9pmET/PT on National Geographic.”

Wildlife guides on the ground

However, we know from reports from guides at the Seal River Heritage Lodge that polar bears hunting beluga from rocks were observed in late summer (August/September) 2017 at the mouth of the Seal River, which is north of Churchill on Western Hudson Bay (see map below). This was the same summer a litter of triplet cubs were spotted in the area, discussed in the same report.

A photo of a Seal River polar bear hunting beluga from a rock, late summer 2017:

CBC nature film footage

As the video below, from CBC’s “The Wild Canadian Year: Summer” narrated by David Suzuki of “The Nature of Things” (uploaded 8 December 2018 to Youtube). I’m no fan of Sukuki’s stance on climate change but am happy to report it does not enter the narrative here, at least in the polar bear clip (I haven’t listened to the rest).

The polar bear hunting beluga sequence starts at 36:50 with the catch at about 42:00.

Clearly, dozens of bears have learned this hunting strategy – probably after watching one local individual give it a try. Polar bear cubs learn hunting skills by watching their mothers, so they are primed to learn a new skill by watching other adults do it. These bears are very smart and learn quickly.

This new hunting strategy had nothing to do with being ‘desperate’ for food, since the bears shown in this video are in excellent condition, as were most bears that summer. Fall freeze-up came early in 2017 (and again in 2018), so they had a shorter wait than usual before they could hunt seals from the ice again.

However, polar bears hunting beluga whale calves in open water is not unheard-of behaviour that has only emerged recently due to climate change: researchers in the 1980s saw bears in the Canadian Arctic hunt beluga calves close to the shore of Somerset Island in a similar if not identical manner (ironically, this is the same island where NG’s equally misleading ‘starving’ polar bear was filmed in 2017). In one case, rather than a rock, a big male bear in 1985 used an isolated pan of ice as a platform from which to leap onto beluga calves swimming in the water (Smith and Sjare 1990:100).

References

Smith, T.G. and Sjare, B. 1990. Predation of belugas and narwhals by polar bears in nearshore areas of the Canadian High Arctic. Arctic 43(2):99-102. DOI: https://doi.org/10.14430/arctic1597