A giant squid attacked a Greenpeace submarine, video footage released by the environmental group shows.

Apparently, some species don’t even recognize their best friends.

The video, released by Greenpeace on Vine, shows the squid aggressively approaching the submarine and squiring black ink at the underwater vessel

The submarine crew, surprised by the attack, pointed a light at the squid in an attempt to scare it away. That seemed to make the creature more nervous as it spun around, thrashed about, and flung its tentacles at the sub.

The close encounter with the giant squid occurred in the Bering Sea. That’s the body of water between Russia and Alaska.

It is unclear at this time when the attack occurred.

The environmentalists in the submarine had neither the means nor the desire to fight back. It is believed that the squid escaped unharmed.

There was also no apparent damage caused to the submarine.

The video, posted to Vine, features the caption: “It’s a squid attacking a submarine during a #BeringSea expedition with @GreenpeaceUSA!”

It is extraordinarily rare that human beings ever see a giant squid. It wasn’t until 2004 that Japanese researchers first photographed one of the creatures. It was eight years later, in 2012, when a live giant squid was videotaped off the coast of Chichi-jama.

It is thought that this is the first instance of a giant squid attacking humans, outside of the H.G. Wells fictitious account in 20,000 Leagues Under the Sea.

[Photo credit: Wikipedia]