Newfoundland and Labrador
Sei whales


Sei whale: 14 meters; 13 tons

The sei whale (Balaenoptera borealis) is often confused with the larger blue and fin whales. Its blow is similar to that of a fin whale, but lower and the sei's dorsal fin is more hooked.

The sei shows little of itself when surfacing, although it may poke its head out of the water, it only arches its back slightly and does not show its flukes before quietly submerging. The sei whale is all one slate gray color on top and may be lighter gray underneath.

Look for several blows in succession as the sei lays on the surface resting between its dives. It may be seen in groups of two to five off Newfoundland.

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