A hitherto unknown polar bear sanctuary in the Arctic has been discovered by the makers of a BBC documentary. An estimated 20 of the bears were seen on the Peterman Iceberg in Baffin Bay, 50km off the Canadian coast. For most of the year, polar bears live on the frozen sea water where they hunt seals. So the finding challenges received wisdom about where polar bears spend the summer months, when the sea ice melts. The sanctuary was discovered during the filming of BBC Two's Operation Iceberg. It had been assumed that polar bears had to move on to the land during the summer, in this case, Baffin Island. Store Glacier The expedition also mapped changes in Greenland's glaciers But now it is clear that not all polar bears return to land. Some spend the summer months surviving on large tabular icebergs off the coast. Presenter Chris Packham commented: "What's there for them is security, and I think they are taking advantage of that. So I think they are living on this iceberg to stay safe, and just wait for the sea ice to come back in." American biologist and polar bear expert Steven Amstrup said this was the first time he had heard of the bears living in large numbers on a tabular iceberg out at sea. Dr Keith Nicholls of the British Antarctic Survey was also on the expedition. He said: "In recent years we've been seeing a lot more big tabular icebergs come off the Greenland ice sheet and they're now ending up in Baffin Bay." Polar bears are hunted by humans on both the mainlands of Greenland and Canada so the icebergs may enable the bears to remain safe from human hunting.
estimate - оценивать
sanctuary - убежище
assume - считать, предполагать
survey - обзор
enable - разрешать
1. Do you like polar bears?
2. Polar bears are beautiful animals, aren't they?
3.Where were these bears seen?
4.Where did polar bears live many years ago?
5. Polar bears had to move on to the land during the summer, didn't they?
6.Do you like this text?
I think many people are interested in our nature. The world ot nature is really very interesting and wonderful!!! Polar bears are beautiful animals. Moreover, there are many beautiful animals on our planet!! So, i think this text is about it. Read this article!!!
I know that Lera likes articles about animals)It's very good...I like this texts too.Polar bears are very nice animals)))I want too have a little bear in my flat
Answer: Wow, I am laughing!!!!It is a unusual idea to have bears in your flat!!!It is cool. I would like to see this sight!!
I think this article is educational. To tell the truth, I like all articles about animals. It is always useful and interesting to know something new about animals which inhabit our planet.
Ohh, polar bears) These cute animals They have become a symbol of our group, by the way! Thanks for the article, the fate of polar bears worries everyone I think.
It's very interesting article. I like watching programs about our nature and animals. To my mind, that BBC programs about nature and animals are very cognitive. I think that polar bears are very beautiful.
They have become a symbol of our group, by the way! 
