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And they re the same colour as the walrus. we ve been taking images of the earth from space for more than 60 years, but our view has changed dramatically. in the 1980s, satellites could only see subjects 30 metres in size. but they quickly improved, and a few years later, they could see features ten metres across. today, though, the most advanced imaging satellites can see details down to just 30 centimetres, and this has transformed our view of the natural world. the sea ice on which they live most i of the year is rapidly diminishing, i and they are having to change their behaviour and come out| onto [and much more often. that s almost certainly got some detrimental effect to them. - but we re not sure how much the population i is being affected by that. the walrus counts will need 500,000 volunteers to scan through images on the wwf website. with their help, we should finally find out how many walruses there are and see how they fare in the years to come. ....
Detrimental effect to them. i but we re not sure how much the population i is being affected by that. the walrus counts will need 500,000 volunteers to scan through images on the wwf website. with their help, we should finally find out how many walruses there are and see how they fare in the years to come. rebecca morelle, bbc news. jack abrey is programme delivery executive for the scouts, has been doing just that. he s leading their walrus count and helped pilot the idea. thank you so much for talking to us about this this evening. this is very intriguing, how do you count walruses7 very intriguing, how do you count walruses? ., . ., ., walruses? thanks so much for having me on. walruses? thanks so much for having me on- it s walruses? thanks so much for having me on. it s really walruses? thanks so much for having me on. it s really intriguing. - walruses? thanks so much for having me on. it s really intriguing. so i walruses? thanks so much for having me on. it s really intrigu ....
Features ten metres across. today, though, the most advanced imaging satellites can see details down to just 30 centimetres and this has transformed our view of the natural world. the sea ice on which they live most of the year is rapidly diminishing and they are having i to change their behaviour and come out onto land much more often. that s almost certainly got some detrimental effect to them. i but we are not sure how much the population i is being affected by that. the walrus counts will need 500,000 volunteers to scan through images on the wwf website. with their help, we should finally find out how many walruses there are and see how they fare in the years to come. rebecca morelle, bbc news. time for a look at the weather, with alina jenkins. mixed fortunes today, for some, blue skies across the isle of wight, the ....