Narwhals may be known as the unicorns of the Artic, but unlike their mythical counterparts, they’re not immortal. Now these unusual creatures may be facing a threat we’ve become all too familiar with: COVID-19. But Neel Aluru, a marine biologist at Woods Hole Oceanographic Institution (WHOI), says that’s not necessarily the case. Narwhals have nearly the same “binding sites” as humans, which potentially puts them in a high-risk category. “The binding sites work like a lock-and-key mechanism,” Aluru says.