Ivory.
The whale that has a distinctive tusk is a narwhal it is native to the arctic ocean
The tusk is rare and difficult to obtain.
It is a tooth, not a tusk, and scientists have not yet discovered what it is for.
ivory tusk
by eating
The Narwhal has a horn. Horse Isle Quiz- Narwhal.
believe it or not, a narwhal's tusk is only 3 inches.
WALRUS! or... NARWHAL!
The Narwhal has a long ivory tusk.
Not braided, but twisted
It depends on the size.
It would depend on which creature you are referring to. Possibly the narwhal has the longest tusk today