This small whale lacks a dorsal fin and has pale, mottled skin, but its most notable feature is the single tusk protruding from its nose, easily as long as a human.
Speed swim 80 ft.
Str 21, Dex 17, Con 14, Int 2, Wis 15, Cha 6
Narwhals are expert deep divers, and a narwhal can hold its breath a number of minutes equal to 2 times its Constitution score before it risks drowning.
A charging narwhal can make a single gore attack with its tusk in place of its normal bite attack. If it hits, the tusk deals 2d6+14 points of damage with a ×3 critical multiplier.