The meme sums it up: Narwhals, swimming in the ocean and causing a commotion, really are awesome. The “unicorns of the sea” have fascinated mariners and royalty for centuries, yet scientists ...

Narwhals use echolocation for foraging and navigation – this is the system used by bats on land. They produce pulses of sound and listen to the echoes to create an image of their surroundings.