Occurred on January 14, 2015 / Thailand
Info from Licensor: "The video was shot during a dive in the Similan Islands, Thailand. While looking at a hole where we had identified an octopus hiding, another group of divers got too close to a moray eel, causing it to leave its hiding spot and go look for a new one. And as it stuck its head in to check out this hole, a fierce fight followed, where the octopus seemed to have the upper hand, or tentacle, but which ends with a twist - leaving the Moray fed and the Octopus a tentacle shorter - but an experience richer! Fortunately, the tentacle will regrow."