Mike Wood's remote-controlled submarine was attacked by a giant Pacific octopus during a research dive.

"I go full reverse and blast him with all these seabed particles," said Wood, describing the attack shown in the video. "Finally, he lets go and disappears off into the gloom.

"It was desperation. It's a $200,000 machine, and it's not insured," said Wood, who runs SubOceanic Sciences Canada in Duncan, B.C.

Link (via Collision Detection)