![](http://i.dailymail.co.uk/i/pix/2012/08/30/article-2195935-14C0AA43000005DC-346_964x721.jpg)
Weaving a web: An astonishing 20ft by 5ft silk blanket spun by Ermine Moth caterpillars to protect themselves and their food from predators
![](http://i.dailymail.co.uk/i/pix/2012/08/30/article-2195935-14C0AE0D000005DC-479_964x721.jpg)
Shielded: The web on shrubbery opposite Belmarsh Prison in south east London is so thick it has the appearance of plastic
![](http://i.dailymail.co.uk/i/pix/2012/08/30/article-2195935-14C0ADED000005DC-610_964x721.jpg)
Protection: Experts believe it would have taken thousands of the tiny 1cms long caterpillars around two weeks to complete the web
![](http://i.dailymail.co.uk/i/pix/2012/08/30/article-2195935-14C04DE6000005DC-598_964x721.jpg)
Spooky: Residents were left stunned by the web that is so strong even snails can glide along the top of it
![](http://i.dailymail.co.uk/i/pix/2012/08/30/article-2195935-14C04DC2000005DC-989_470x545.jpg)
The very hungry caterpillars: Ermin Moth caterpillars, left, cocoon themselves with webs over their favourite feeding plants before pupating into adult moths
![](http://i.dailymail.co.uk/i/pix/2012/08/30/article-2195935-14C0ABC1000005DC-478_964x721.jpg)
Favourite morsel: The caterpillars like to feed on hawthorn and blackthorn and will create a cocoon around the plants
類似的場景也在印度發生過
![](http://i.dailymail.co.uk/i/pix/2012/08/30/article-2195935-14C1EC38000005DC-874_964x641.jpg)
Similar scene: Stunned villagers stand next to trees near Dadu, in Pakistan's Sindh province, that have been cocooned in spider webs |