The narwhal’s tusk appears to be situated in the center of its head, but it is really an exaggerated left front tooth that ...

Scientists who fitted heart rate-monitoring tags to Arctic narwhals have discovered a strange ... to look at the biology of a deep-diving whale." The tags she developed incorporate a heart monitor ...

Writing on Facebook, Ms Steffen said Narwhal, named after a species of whale that has a single large "tusk", had visited the vet on Tuesday. And X-rays had showed his secondary tail, about a third ...

The term “narwhal” is Scandinavian and means “corpse whale”, which refers to the creature’s mottle grey-black skin colour – the colour of a corpse. In fact when they are born ...