Still waiting for two thirds of polar bears worldwide to disappear due to lack of summer sea ice

From Polar Bear Science

By Susan Crockford

t’s hard to believe that a polar bear specialist would claim that their predictions have come true, given the facts of the matter: that polar bears arguably number over 30,000 worldwide and regions with the most dramatic sea ice declines have not documented reduced polar bear health or survival. But in mid-July this year, Andrew Derocher – one of the field’s most vocal promoters – did just that: proclaimed on twitter that “virtually all of our predictions are coming true.” Except, none of them did, especially the most widely-promoted one, which failed spectacularly.

The paper Derocher referred to in his tweet from 1993 was called ‘Possible impacts of climatic warming on polar bears‘ and it didn’t really contain predictions so much as speculations, which Ian Stirling hoped would distract from the odd patterns in polar bear health and survival he had documented in Western Hudson Bay but couldn’t explain [declining body condition, lowered reproductive rates, reduced cub survival, and increased polar bear-human interactions] (Stirling and Derocher 1993; Crockford 2019). As stated in the abstract of that paper “Although most of these changes are currently detectable in the polar bears of western Hudson Bay, it cannot yet be determined if climatic change is involved.” That’s right: those changes in polar bears were happening even before the changes in sea ice breakup and freeze-up patterns currently blamed on climate change had occurred. Similar changes have happened since but are now blamed on climate change .

As an aside, it’s worth noting that the delay in sea ice breakup mentioned in that paper that occurred in 1992 (said to have been “the opposite of what would be predicted by climate warming“) was blamed on the eruption of Mt. Pinatubo in the Philippines. Oddly, however, there has been no external causation offered for the similarly late breakup and early freeze-up of sea ice that happened more than two decades later, in 2019.

The real predictions came decades later (e.g. Stirling and Derocher 2012), with prophesies of increased cannibalism, deaths by mass starvation, drowning and den collapses, none of which happened (Crockford 2019).

But let’s focus on the big one: the prediction that failed spectacularly. Derocher would rather forget Steven Amstrup’s 2007 prediction that 2/3 of polar bears would be gone after 10 years of 40% less summer ice (Amstrup et al. 2007; USGS 2007).

This month, it will be 14 years since the most widely-promoted polar bear prediction of all time was made by US Geological Survey biologist Steven Amstrup and his colleagues. Sea ice dropped to a new low that September (see above, from Amstrup et al. 2008) and ever since, with a bit of up and down, September ice extent has been about the level that sea ice experts in 2005 predicted would be upon us by 2050 (ACIA 2005; Stroeve et al. 2007). Ahead of schedule! Worse than they thought! Fourteen years of mid-century sea ice!

Above: Predicted sea ice decline vs. actual (to 2007), from Stroeve et al. 2007.

And while it looks likely that ice extent in September 2021 won’t be anywhere as close to 2012 as Derocher feared in July (see below), it will still be at levels considered to be devastating for polar bears (i.e. between about 3-5 mkm2, within measurement error, for at least 8 out of 10 years):

Same graph as above but at 11 September 2021 vs. 2020, 2012 and 2007 (bright blue is 2021):

See graph below for September sea ice to 2020 (NSIDC, to 2019, 2020 added):

The predicted decline of polar bear numbers was tied to September sea ice decline: the ice cover dropped but polar bear numbers didn’t (Crockford 2017, 2019; Crockford and Geist 2018). Derocher and his chums can denigrate me all they like (and oh, how they love to do so) and call me a ‘denier’ and imply I am nothing but a blogger but these things do not change the facts: I am a zoologist with a Ph.D. just like many of them and polar bear numbers did not decline by 67% (i.e. a drop of about 17,300) despite 14 years of sea ice conditions they said would devastate the global population.

They have no explanation for this utterly failed prediction except to insist they always expected different subpopulations to decline at different rates. Except that’s not actually true but you have to look at the papers I have archived from 2007 to see it (Amstrup et al. 2007; Durner et al. 2007; Hunter et al. 2007; Regehr et al. 2007; USGS 2007).

What they said was that polar bears in Seasonal ice areas (Western and Southern Hudson Bay, Foxe Basin, Davis Strait, Baffin Bay) and Divergent ice areas (Southern Beaufort Sea, Chukchi Sea, Laptev Sea, Kara Sea, Barents Sea) – green and purple areas in the map below (from Regehr et al. 2016) – would be hit with comparable declines in ice and that polar bear numbers in these area would decline similarly. Nothing like that happened.

What has happened?

Sea ice decline has been moderate in Seasonal ice regions (which include the furthest-south habitats) and dramatic in Divergent regions. In Southern and Western Hudson Bay, ice declined suddenly in 1998 (Castro de la Guardia et al. 2017) but hasn’t changed much since, except it was back to 1980 levels in 2019 and 2020. Population levels are said to have declined in 2016 in both regions but the amount was statistically insignificant (Crockford 2021). Foxe Basin and Davis Strait bears appear to have been thriving despite the ice declines, and Baffin Bay bears are holding their own (Crockford 2021; Peacock et al. 2013; Stapleton et al. 2012; SWG 2016).

In the Barents Sea, summer ice extent has declined six times as much as ice in Western Hudson Bay and the Chukchi Sea – more than any other subpopulation – but the bears are still doing fine with no sign of a population decline (Aars 2018; Aars et al 2017; Lippold et al. 2019; Regehr et al. 2016). Southern Beaufort Sea bear numbers declined a decade ago but numbers held steady up to 2015 despite continued summer sea ice declines (Atwood et al. 2020; Crockford 2021); then in 2019, a record number of fat bears were counted ashore in July. Like Barents Sea bears, those in the Chukchi Sea are doing very well: bears are in excellent condition and reproducing well with no signs of a population decline despite a much longer open water season than in the 1980s (Conn et al. 2021; Regehr et al. 2018; Rode et al. 2014, 2018). Condition of bears and their abundance in the Laptev Sea are unknown but there is no reason to expect they are doing worse than those in the Chukchi or Barents Seas (Crockford 2019, 2021). After all, primary productivity in the Laptev Sea was much higher in 2020 than it was in the 1980s (Frey et al. 2020), which means more food for every species higher up the food chain, including bears.

The increased spring rain events they predicted would happen along with earlier sea ice breakup never materialized. Neither did repeated deaths by drowning during the ice-free season or marked increases in incidents of cannibalism. Incidents of polar bear-human conflicts have not increased and those that have occurred cannot be plausibly tied to lack of sea ice (although Derocher and his colleagues have tried) (Crockford 2019, 2020, 2021).

What went wrong?

The experts failed to account for the fact that less summer ice means more primary productivity and therefore, more food for seals and therefore, more food for bears (Coupel and Devred 2019; Crockford 2021; Frey et al. 2020; George et al. 2020). They failed to account for the explosion of harp seal numbers in Davis Strait (DFO 2020; Peacock et al 2013).

They also pretended that abundant summer sea ice for hunting seals was essential for polar bear health and survival when they knew that spring was really the critical feeding period.

In addition, many bears in Hudson Bay and elsewhere have shown a preference for remaining on summer ice of considerably less than 50% concentration, contradicting all of their model assumptions. And lastly, they discounted the feeding opportunities presented by newly-formed shorefast ice in fall.

In short, their mantra that ‘sea ice loss = polar bear decline’ has not been supported by the data they have collected, even though they spin the results as much as possible to make it appear otherwise: the contradictions in localized sea ice declines vs. polar bear health have been too blatantly obvious to cover up.

Bottom line

We are still waiting to see 2/3 of the world’s polar bears disappear due to dramatically low summer ice levels.


Aars, J. 2018. Population changes in polar bears: protected, but quickly losing habitat. Fram Forum Newsletter 2018. Fram Centre, Tromso. Download pdf here (32 mb).

Aars, J., Marques,T.A, Lone, K., Anderson, M., Wiig, Ø., Fløystad, I.M.B., Hagen, S.B. and Buckland, S.T. 2017. The number and distribution of polar bears in the western Barents Sea. Polar Research 36:1. 1374125. doi:10.1080/17518369.2017.1374125

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Amstrup, S.C., Marcot, B.G., Douglas, D.C. 2008. A Bayesian network modeling approach to forecasting the 21st century worldwide status of polar bears. Pgs. 213-268 in Arctic Sea Ice Decline: Observations, Projections, Mechanisms, and Implications, E.T. DeWeaver, C.M. Bitz, and L.B. Tremblay (eds.). Geophysical Monograph 180. American Geophysical Union, Washington, D.C. and

Atwood, T.C., Bromaghin, J.F., Patil, V.P., Durner, G.M., Douglas, D.C., and Simac, K.S., 2020. Analyses on subpopulation abundance and annual number of maternal dens for the U.S. Fish and Wildlife Service on polar bears (Ursus maritimus) in the southern Beaufort Sea, Alaska: U.S. Geological Survey Open-File Report 2020-1087. pdf here.

Castro de la Guardia, L., Myers, P.G., Derocher, A.E., Lunn, N.J., Terwisscha van Scheltinga, A.D. 2017. Sea ice cycle in western Hudson Bay, Canada, from a polar bear perspective. Marine Ecology Progress Series 564: 225–233.

Conn, P.B., Chernook, V.I., Moreland, E.E., Trukhanova, I.S., Regehr, E.V., Vasiliev, A.N., Wilson, R.R., Belikov, S.E. and Boveng, P.L. 2021. Aerial survey estimates of polar bears and their tracks in the Chukchi Sea. PLoS ONE 16(5): e0251130. OPEN ACCESS

Coupel, P., Michel, C. and Devred, E. 2019. Case study: The Ocean in Bloom. In State of Canada’s Arctic Seas, Niemi, A., Ferguson, S., Hedges, K., Melling, H., Michel, C., et al. 2019. Canadian Technical Report Fisheries and Aquatic Sciences 3344.

Crockford, S.J. 2017. Testing the hypothesis that routine sea ice coverage of 3-5 mkm2 results in a greater than 30% decline in population size of polar bears (Ursus maritimus). PeerJ Preprints 19 January 2017. Doi: 10.7287/peerj.preprints.2737v1 Open access.

Crockford, S.J. 2019The Polar Bear Catastrophe That Never Happened. Global Warming Policy Foundation, London. Available in paperback and ebook formats.

Crockford, S.J. 2020. State of the Polar Bear Report 2019. Global Warming Policy Foundation Report 39, London. pdf here.

Crockford, S.J. 2021. The State of the Polar Bear Report 2020. Global Warming Policy Foundation Report 48, London. pdf here.

Crockford, S.J. and Geist, V. 2018. Conservation Fiasco. Range Magazine, Winter 2017/2018, pg. 26-27. Pdf here.

DFO. 2020. 2019 Status of Northwest Atlantic Harp Seals, Pagophilus groenlandicus. DFO Can. Sci. Advis. Sec. Sci. Advis. Rep. 2020/020.  PDF here.

Durner, G.M., Douglas, D.C., Nielson, R.M., Amstrup, S.C. and McDonald, T.L. 2007. Predicting 21st-century polar bear habitat distribution from global climate models. US Geological Survey. Reston, Virginia. Pdf here.

Dyck, M., Regehr, E.V. and Ware, J.V. 2020. Assessment of Abundance for the Gulf of Boothia Polar Bear Subpopulation Using Genetic Mark-Recapture. Final Report, Government of Nunavut, Department of Environment, Iglulik. 12 June 2020. Pdf here.

Hunter, C.M., Caswell, H., Runge, M.C., Regehr, E.V., Amstrup, S.C. and Stirling, I. 2007. Polar bears in the southern Beaufort Sea II: demography and population growth in relation to sea ice conditions, 2001-2006. Administrative Report US Geological Survey, Reston, VA. Pdf here.

Frey, K.E., Comiso, J.C., Cooper, L.W., Grebmeier, J.M. and Stock, L.V. 2020. Arctic Ocean primiary productivity: the response of marine algae to climate warming and sea ice decline. 2020 Arctic Report Card. NOAA. DOI: 10.25923/vtdn-2198

George, J.C., Moore, S.E. and Thewissen, J.G.M. 2020. Bowhead whales: recent insights into their biology, status, and resilience. 2020 Arctic Report Card, NOAA. DOI: 10.25923/cppm-n265

Hunter, C.M., Caswell, H., Runge, M.C., Regehr, E.V., Amstrup, S.C. and Stirling, I. 2007. Polar bears in the southern Beaufort Sea II: demography and population growth in relation to sea ice conditions, 2001-2006. Administrative Report US Geological Survey, Reston, VA. Pdf here.

Lippold, A., Bourgeon, S., Aars, J., Andersen, M., Polder, A., Lyche, J.L., Bytingsvik, J., Jenssen, B.M., Derocher, A.E., Welker, J.M. and Routti, H. 2019. Temporal trends of persistent organic pollutants in Barents Sea polar bears (Ursus maritimus) in relation to changes in feeding habits and body condition. Environmental Science and Technology 53(2):984-995.

Peacock, E., Taylor, M.K., Laake, J., and Stirling, I. 2013. Population ecology of polar bears in Davis Strait, Canada and Greenland. Journal of Wildlife Management 77:463–476.

Perovich, D., Meier, W., Tschudi, M., Hendricks, S., Petty, A.A., Divine, D., Farrell, S., Gerland, S., Haas, C., Kaleschke, L., Pavlova, O., Ricker, R., Tian-Kunze, X., Webster, M. and Wood, K. 2020. Sea ice. 2020 Arctic Report Card, NOAA. Pdf of entire Arctic Report Card here (12mb).

Regehr, E.V., Hostetter, N.J., Wilson, R.R., Rode, K.D., St. Martin, M., Converse, S.J. 2018. Integrated population modeling provides the first empirical estimates of vital rates and abundance for polar bears in the Chukchi Sea. Scientific Reports 8 (1) DOI: 10.1038/s41598-018-34824-7

Regehr, E.V., Lunn, N.J., Amstrup, S.C. & Stirling, I. 2007. Effects of earlier sea ice breakup on survival and population size of polar bears in Western Hudson Bay. Journal of Wildlife Management 71: 2673-2683. Paywalled, subscription required.

Regehr, E.V., Laidre, K.L, Akçakaya, H.R., Amstrup, S.C., Atwood, T.C., Lunn, N.J., Obbard, M., Stern, H., Thiemann, G.W., & Wiig, Ø. 2016. Conservation status of polar bears (Ursus maritimus) in relation to projected sea-ice declines. Biology Letters 12: 20160556. Supplementary data here.

Rode, K.D., Regehr, E.V., Douglas, D., Durner, G., Derocher, A.E., Thiemann, G.W., and Budge, S. 2014. Variation in the response of an Arctic top predator experiencing habitat loss: feeding and reproductive ecology of two polar bear populations. Global Change Biology 20:76-88.

Rode, K. D., R. R. Wilson, D. C. Douglas, V. Muhlenbruch, T.C. Atwood, E. V. Regehr, E.S. Richardson, N.W. Pilfold, A.E. Derocher, G.M Durner, I. Stirling, S.C. Amstrup, M. S. Martin, A.M. Pagano, and K. Simac. 2018. Spring fasting behavior in a marine apex predator provides an index of ecosystem productivity. Global Change Biology 24:410-423.

Stapleton, S., Peacock, E., and Garshelis, D. 2012. Foxe Basin polar bear aerial survey. Nunavut Wildlife Research Trust, Government of Nunavut, Igloolik. Pdf here.

Stirling and Derocher 1993. Possible impacts of climatic warming on polar bears. Arctic 46(3):240-245. Open access

Stirling, I. and Derocher, A.E. 2012. Effects of climate warming on polar bears: a review of the evidence. Global Change Biology 18(9): 2694–2706.

Stroeve, J., Holland, M.M., Meier, W., Scambos, T. and Serreze, M. 2007. Arctic sea ice decline: Faster than forecast. Geophysical Research Letters 34:L09501.

SWG [Scientific Working Group to the Canada-Greenland Joint Commission on Polar Bear]. 2016. Re-Assessment of the Baffin Bay and Kane Basin Polar Bear Subpopulations: Final Report to the Canada-Greenland Joint Commission on Polar Bear. +636 pp.

US Geological Survey (USGS). 2007. Executive Summary, USGS Science Strategy to Support U.S. Fish and Wildlife Service Polar Bear Listing Decision. Administrative Report, US Geological Survey. Reston, Virginia. Pdf here.

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Chris Hanley
September 15, 2021 6:06 pm

Polar bears and brown bears are genetically closely related have similar DNA and interbreed.
Excessive polar bear concern = white privilege.

Bryan A
Reply to  Chris Hanley
September 15, 2021 7:25 pm

And they make Blonde Babies

Tom Abbott
September 15, 2021 6:36 pm

I can hear Griff whining now.

Bryan A
Reply to  Tom Abbott
September 15, 2021 8:49 pm

Simple solution to their failed prediction…
17,300 buckets of seal and walrus meat & blubber placed in the arctic region and you will have 17,300 Polar Bears “Kick the Bucket” to get at the contents

Reply to  Tom Abbott
September 16, 2021 3:43 am

and you can see my fact based criticism of this piece above.

I can hear Tom Abbott hurling abuse instead of arguing based on facts…

Reply to  griff
September 16, 2021 6:16 am

LOL, you have yet to post any supported facts in the thread just words and nothing more.

Reply to  griff
September 16, 2021 6:42 am

Naked assertions are not facts. Especially when the actual facts refute your naked assertions.

Reply to  MarkW
September 16, 2021 6:44 am

All of the surveyed populations are growing, but griff assures us that the unsurveyed populations must be crashing.
It’s sort of like how global warming is mostly found in the areas between the sensors. The areas that have to be “infilled” in order to make reality match what the models have predicted.

Bryan A
Reply to  griff
September 16, 2021 6:43 am

And you can see my fact based criticism of this piece above…

Tom Abbott
Reply to  Bryan A
September 16, 2021 9:46 am

Griff posted a short comment down below. I guess he thinks that’a s rebuttal. All he offers is his opinion,. As always.

Alan the Brit
Reply to  Tom Abbott
September 16, 2021 4:20 am

I know longer count sheep to get to sleep, I just count Griff’s whines!!!! Trust me nothing puts me to sleep faster!!! 😉

September 15, 2021 6:52 pm

Under the hideous grinning portrait of Michael E. Mann, we read:
“virtually all of our predictions are coming true” , by this he means “less than 1%”

Reply to  nicholas tesdorf
September 15, 2021 8:04 pm

“Virtually all” to Michael Mann means “none we can document”.

Bryan A
Reply to  Tom Halla
September 15, 2021 8:51 pm

Key word being “Virtual” they’re 100% right in the modeled Virtual World so…
They’re virtually correct

Trying to Play Nice
Reply to  nicholas tesdorf
September 16, 2021 4:45 am

Mann says climate scientist don’t like to see their predictions come true. He must be happy that they’ve been wrong almost 100% of the time.

Bob Hunter
Reply to  nicholas tesdorf
September 17, 2021 12:27 pm

Well, confirmation of the predictions coming true have been peered reviewed!!!

Smart Rock
September 15, 2021 7:50 pm

Just like the perpetually grinning Michael Mann, Amstrup, Derocher et al are riding the tiger. They can’t get off because it will eat them. So they have to keep piling more lies on top of the steaming heap they have already published. With the compliant mainstream media, they will probably keep getting away with it for a few more years.

It’s the good old Emperor’s New Clothes Syndrome in action. Sooner or later, the truth will emerge from the shadows, scales will fall from eyes, politicians will deny ever having said what they said, and the children will still know what snow is.

Reply to  Smart Rock
September 15, 2021 9:20 pm

The difference is that now-days we have the internet which recorded all of their lies for posterity to view. They can try to change history, but the evidence convicts them of their crimes against the world.

Gerry, England
Reply to  Karl Baumgarten
September 16, 2021 2:57 am

True, and the internet also provides the facility to publish facts that show that they are lying

September 15, 2021 8:03 pm

Duuh! An apex predator thriving with it’s primary food source? It must be post-modern science to deny that, and insist that their model of how the bears hunt seals matters more than the actual abundance of polar bears and seals.

September 15, 2021 8:53 pm

It looks like 2021’s Arctic Ice Minimum will be around 4.7 million KM^2, which is 1.3 KM^2 larger than the 2012 record low, and will rank as the 10th lowest since 1979.

According to Leftists, the Arctic Ice Summer Minimum should already be “ice free” at around 1 million KM^2… not so much…

As the PDO/AMO both approach reentering their respective 30-year cool cycles, Arctic Ice Extents will continue to grow for the next 30+ years as they did from 1945~1980 and 1880~1910 during PDO/AMO cool cycles..

It’ll be hilarious to hear Leftists postulate that CAGW can cause both global warming and global cooling..not so much.

Leftists are so hilarious.

Reply to  SAMURAI
September 16, 2021 8:21 am

Three data sets show the end of melting season, on different dates, 9/11, 9/12, 9/13

Dr Burns
September 15, 2021 9:06 pm

These graphs always show a 2 sigma band rather than the standard 3 sigma. Could it be that this is done to intentionally make things look abnormal when they are not?

Reply to  Dr Burns
September 15, 2021 10:55 pm

It’s my understanding of the scientific method, that when hypothetical mean projections exceed mean observations by more than 2 SDs for a statistically significant duration (apparently 30 years for noisy climate data) then the hypothesis is officially disconfirmed.

If the PDO and AMO soon reenter their 30-year cool cycles, my best guess is that by around 2030, UAH 6.0 global temp anomalies will show over 30+ years of observed global temp anomalies being more than 2 SDs below CAGW hypothetical projections and CAGW will be officially disconfirmed.

We’ll see soon enough.

Pat from kerbob
September 15, 2021 9:18 pm

Keep it up Susan, many of us Canadians cheer for you every day

One day the haters will be exposed and ridiculed out of the public sphere

Robert of Texas
September 15, 2021 9:19 pm

They haven’t had a chance to adjust the data yet. I am sure after they homogenize the data, apply it to areas they have no real data on, and “fix” old data they will show that 2/3’s of the polar bears simply vanish – in the data.

This should be a sarcastic remark but it isn’t – this is how new science apparently works.

(No, that wasn’t sarcasm either)

September 16, 2021 12:54 am

The “virtually” means the predictions came true only in their virtual reality not in the real world. Imagination & models (works of art) are required to show their predictions come true.

CO2 in atmosphere has increased. Temperatures & weather have changed (following old cycles). There’s not much new for reliable evidence for AGW, CO2 is not the big control knob driving the rest of the climate system.

Last edited 1 month ago by tygrus
Pamela Matlack-Klein
September 16, 2021 2:58 am

[declining body condition, lowered reproductive rates, reduced cub survival, and increased polar bear-human interactions]

What, if anything, was discovered about this situation with Western Hudson Bay bears? These are serious conditions affecting the population and it seems likely that there was something going on to cause them. Was any effort made to discover the cause? These researchers claim to be concerned about the health of the polar bear populations but they don’t seem to have done much to learn what really impacts them. Instead they have jumped on the CAGW bandwagon with all the rest of the rent-seekers. What it looks like is that grant money is spent building models that support the claims that melting sea ice is/was causing all ills the bears were suffering when it should have been paying for actual investigation in the field. So much money flushed down the rat hole of computer modeling based on assumptions and fantasy that could have funded genuine research! This is not science but fiction.

Reply to  Pamela Matlack-Klein
September 16, 2021 5:12 am

“declining body condition, lowered reproductive rates, reduced cub survival, and increased polar bear-human interactions” – nothing to do with the amount of garbage that now comprises much of their diet?

Last edited 1 month ago by JCalvertN(UK)
Pamela Matlack-Klein
Reply to  JCalvertN(UK)
September 16, 2021 5:48 am

Well this complaint was from the early 90s. Do the bears have a poor diet now? I thought they lived on baby seals and their accumulated fat supplemented with the odd human wandering out and about….

September 16, 2021 3:42 am

Hudson Bay bears are in decline, most of the polar bear population isn’t even surveyed, the ice is certainly retreating further and faster in spring and in many recent years has failed to freeze over to enable bears to reach denning areas in Novaya Zemlya and Svalbard.

In short, once again misrepresentation of facts

Reply to  griff
September 16, 2021 6:14 am

Yet you offer ZERO facts to back up your assertions while the Authors posted numerous published papers supporting her assertions.

Dr. Crockford 1

Griff 0

Reply to  griff
September 16, 2021 6:17 am

So you say with ZERO evidence provided, what “facts” are you referring to?

Dave Andrews
Reply to  griff
September 16, 2021 7:23 am

Griff, you do know polar bears can swim don’t you? For example, a polar bear tagged in Spitsbergen (Svalbard) in 1967 was shot a year later in southwest Greenland more than 2000 miles away. How do you think the bear got there – by ferry?

pHil R
Reply to  griff
September 16, 2021 8:10 am

Hey Griiff,

The scientific name for the polar bear is, Ursus maritimus, which is the Latin for ‘maritime bear’, or sea bear. what part of sea bear do you not understand?

Last edited 1 month ago by pHil R
Reply to  griff
September 16, 2021 8:23 am

Thick ice in spring is deadly for polar bear cubs, didn’t you know ?
So be happy with less ice in spring, btw. not so “less” as you suggest 😀

Richard Page
Reply to  griff
September 16, 2021 9:19 am

Griffy you are becoming more and more delusional as time goes on. Hudson bay bears are not in decline and sea ice has not changed that much that Polar Bears have not been able to adapt to the different conditions. As to your inane comment “most of the polar bear population isn’t even surveyed” – you are being spurious and ridiculous. The polar bear populations are surveyed more closely now than ever before, given the requirements of as little interference in their lives as possible; it has always been the way to estimate the total subpopulations from a viewed sample and this method hasn’t changed in decades, it’s just there are far more complete sets of data now. Your failed propaganda pieces are laughably inadequate and woefully wrong in every way – either read up on the facts or start writing more fairy stories Griffy, you’ve certainly had loads of practice.

Tom in Florida
Reply to  griff
September 16, 2021 9:57 am

“Hudson Bay bears are in decline, most of the polar bear population isn’t even surveyed,”
How many bears are included in unsurveyed bear populations? How would you know?

Andrew Wilkins
Reply to  griff
September 16, 2021 9:59 am

“, most of the polar bear population isn’t even surveyed”
So what you’re saying is that there are more bears out there, but they haven’t been counted? Watch out Griff, the thermaggedonists won’t like you admitting that the polar bear population is higher than the reported number!

Reply to  griff
September 16, 2021 11:44 am

Don’t feed the troll……………………..

September 16, 2021 4:26 am

The really sick part of this is these leftist scumbags want Polar Bears to die, that is the only way they can advance their leftist political ideology. Truly sick people.

John in Oz
Reply to  2hotel9
September 16, 2021 4:15 pm

What detrimental effect would losing all polar bears have on the environment and other polar creatures??

The polar bear is the apex predator in this environment, top of the food chain. Other creatures are not dependent on polar bears for their existence (except, maybe, some maggots).

If, as some seem to hope for, all us apex predator humans left the planet and Gaia was happy, why not the same for polar bears in their niche environment?

Caveat – I hope the polar bears continue, I just would not wish to cuddle one

Reply to  John in Oz
September 17, 2021 3:58 am

Myself? I would like to hunt Polar Bear, been stalked by a grizzly for two days in Montana while hunting elk, took a black bear here in Pennsylvania.

The detrimental effect we are going to experience is the further destruction wrought by leftist, anti-human ideology being forced on real human beings who do not want it.

Andrew Wilkins
September 16, 2021 10:02 am

The ratio on some of Derocher and Mann’s tweets is a sight to behold. People are laughing at the couple of old frauds.
Mann must be getting RSI from having to hit the block button so much.

September 16, 2021 2:18 pm

Bad bears, bad bears. What are you going to do, when they come for you?

With the unrecovery (sic) of polar bears, this is the time to donate to World Walrus Foundation, a joint project of walruses and seals endangered by the climate cooling… warming… change (i.e. status quo). Think of the pups!

September 16, 2021 5:55 pm

That bear built a fort!

September 17, 2021 6:32 pm

Not a single climate doom prediction has come true that I know of. Not a single one !

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