Hurricane Sandy has left a swath of destruction across the Caribbean and eastern United States. Thousands of images have been circulating around the web, showing flooded streets, destroyed homes and submerged Subway stations. Some of the images that have popped up around the Web are truly unbelievable but how do you know which ones are fake and which ones are real? The Atlantic has posted an exhaustive (and continually updated) article, sorting out the genuine images from the fake.

This genuine image shows a tidal surge in Atlantic City - just one image among thousands which shows the extent of the devastation wrought by Hurricane Sandy this week.  

According to the author, Senior Editor Alex Madrigal, the story is 'an effort to sort the real from the unreal. It's a photograph verification service, you might say, or a pictorial investigation bureau'.

Madrigal, who is accepting submissions of suspect images, explains - 'The fakes come in three varieties: 1) Real photos that were taken long ago, but that pranksters reintroduce as images of Sandy, 2) Photoshopped images that are straight up fake, and 3) The combination of the first two: old, Photoshopped pictures being trotted out again'.

It should come as no surprise that this image, which purportedly shows a shark swimming in the flooded streets of Brigantine, New Jersey, is a composite. 

What's most striking about the article is how many of the images that don't look real, actually are. The destruction is incredible and the relief effort is ongoing. This link contains information about how you can help.