In the frigid waters near Antarctica, the elusive squid Gonatus antarcticus was recently spotted by a remotely operated vehicle. It's the first time this squid has been seen alive.

There is a video in the link too

As the expedition’s remote vehicle, SuBastian, slowly dropped 7,000 feet through the ocean’s inky twilight zone toward the seabed on Christmas morning, Novillo watched a live video feed streaming into the ship’s mission control room.

Suddenly, he spotted a shadow a few feet away. Intrigued, he asked the pilot to get closer. And “voila, it appeared,” he says.

There, in front of the rover, was a three-foot-long squid, which released a small cloud of greenish ink—perhaps startled by the vehicle.

They used lasers to get an accurate measurement of its size, and the pilot turned down the lights so the team could get an idea of how this enigmatic animal lives in its natural environment.