Just when you thought it was safe to go back in the water...

Incredible photos and vision of sharks feasting on a whale carcass in the state's north-west may not do much for WA tourism but they certainly are a spectacular reminder of what lurks off our coast.

Surfer Rachel Campbell posted the images and footage - apparently from Warrorra Station, on the north-west coast of WA - on on her tumblr.com blog.

Campbell wrote that she would happily surf the waters on our north coast again - but preferably without any finned and feed-hungry friends.