Enlarge (credit: Science & Society Picture Library | Getty Images)
Researchers have long debated what the 10-foot-long tooth that erupts from a narwhal’s head is actually for. Perhaps it has
Narwhal tusks tell a troubling tale
Enlarge (credit: Science & Society Picture Library | Getty Images)
Researchers have long debated what the 10-foot-long tooth that erupts from a narwhal’s head is actually for. Perhaps it has