The recordings gave us valuable insight into their abundance, size and behaviour, as well as their distribution in the Canadian Arctic.
These findings are the first step towards closing a major knowledge gap on the population status of the Greenland shark.
But sampling at extreme depths and in seasonally ice-covered waters is especially difficult.
However, we recently captured some of the first underwater video footage of Greenland sharks in the Canadian Arctic.
Greenland sharks are by far the largest fish in the Arctic.
Just how they catch these fast-swimming marine mammals, remains a mystery to researchers.And we did it without taking any sharks from the water.Until now, most of what we knew about Greenland sharks came from the historical records of commercial landings.Greenland sharks arrived at 80 percent of our deployments.We used the video to distinguish one individual from the next based on their unique skin markings, a method researchers also use to identify for whale sharks and great white sharks. The videos also gave us additional information about the sharks, including their length and swimming speeds.