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