50 degrees north latitude and 55 degrees west longitude is located in the North Atlantic Ocean, specifically in the Grand Banks region off the coast of Newfoundland, Canada.

This area is known for:

* Fishing grounds: The Grand Banks are historically significant fishing grounds, famous for cod, haddock, and other species.

* Cold currents: The confluence of warm and cold currents in the area creates a rich ecosystem.

* Underwater canyons: The area features deep underwater canyons.

* Oil and gas exploration: There are oil and gas reserves in this region.

Let me know if you would like more details about any of these aspects!