Surveillance is science, as the scientists might say. New careful drone observation of Narwhals has exposed far more usage of their tusk than previously understood.

A series of narwhal and fish behaviors recorded during the course of an extended interaction between three narwhal and a single Arctic char in Creswell Bay, Somerset Island, Nunavut. The two larger, adult whales (W1, W3) had a similar mottled pattern that was lighter in overall color than the mottled pattern of the smaller subadult whale (W2). However, each whale is denoted by a label and distinct color for ease of continuity across the panel of diagrams. The fish is shaded in blue. Arrows denote movements of individual animals.