There are so many shark videos circling the internet, but this shark is not often among them: the six-gill shark. This primitive shark was around in the time of the dinosaurs and is the world’s third-largest predatory shark.

A team working with OceanGate, an organization that provides subsea research and exploration, filmed the shark alongside a posse of dogfish earlier this month. The sixgill was spotted as the team explored the water using OceanGate’s Cyclops 1 submarine near British Columbia’s Desolation Sound.

The shark was spotted at a depth of 490 feet, and is estimated to be about 12 to 15 feet long. Sixgills typically stay at depths below 200 feet and have been known to swim as deep as 8,000 feet, according to OceanGate. Their preference for deep waters makes them difficult to spot.

See the video