There was an article in The Atlantic with a bit more info, but the hunter that killed it initially called it a narluga. That stuck in spite of the convention b

There was an article in The Atlantic with a bit more info, but the hunter that killed it initially called it a narluga. That stuck in spite of the convention being backwards: the genetics suggest the mother was a narwhal, which would make this particular combo a belwhal by the standard convention.