Terrifying moment massive octopus attacks a lifeguard

A former lifeguard has been attacked at an idyllic holiday spot by an 'angry' octopus that wrapped its tentacles around his neck.

Lance Karlson, 34, first saw the marine creature when it lashed out at a seagull near Ramada resort at Geographe Bay in Dunsborough, Western Australia, while walking with his two-year-old daughter on the beach.

He videoed the octopus splaying in the crystal clear water, before it pounced on his neck when he turned his back.