N.H.L. team with a mythological eponym (6)
I believe the answer is:
kraken
(Other definitions for kraken that I've seen before include "Mythical sea monster (Norway)" , "A legendary sea monster of Norwegian myth" , "Mythical sea-monster off Norway's coast" , "The -- Wakes (John Wyndham)" , "Sea monster that sleepeth (Tennyson)" .)