Mammal
Narwhal
The narwhal is a mammal, not a fish. It breathes air.
Photo by пресс-служба ПАО "Газпром нефть". CC BY-SA 4.0 · Source
Unusual but true
A narwhal's long tusk is a tooth that can sense the water.
Where it lives
Narwhals live in the Arctic ocean.
What it eats
A narwhal eats fish and squid.
How big
About as long as a small bus, not counting the tusk.
Places: Arctic, Ocean