the use their horn to feel things around them!
Narwhals do indeed use echolocation, like dolphins, and their sensitive horns to maneuver in the ocean
narwhals have horns
YES
yes they r
go to a narwall populated area and help stop pulition
no but they will do it to predators EG shark
Only about 15% of female narwhals have a horn. Almost all male narwhals have a horn.
Narwhals are small whales with long, sharp horns petruding from their heads. They are very "stabby" if that answers your question.
no they were born with apple sause on there head
Because no narwhals have horns! However, both male and female narwhals have tusks. Males are more likely to have two tusks, but you can't necessarily see a narwhal and judge its gender based on its tusk.
It is illegal to hunt Narwhals and to use their horns. If you are really unsure you can get a more specific answer from a Google search :)
Their "Tusk" has several uses, please access Wikipedia's entry for "Narwhale" for a more detailed answer.