Who are the Denalis in the movie eclipse?

In the movie "Eclipse," the Denalis are a coven of vampires who are distant relatives of the Cullen family. They consist of members Tanya, Kate, and Irina, who are portrayed as more nomadic and have a strong bond with the Cullens. The Denalis play a crucial role in supporting the Cullens during the conflict with the newborn vampire army. Their presence highlights the theme of unity among different vampire factions against a common threat.