Greenlandic shark

We were watching the ocean for anything that moved when, right below the ship, a fin appeared.  I had no time to get a shot while the animal was on the surface but, for identification purposes, tried to catch it as it submerged.  I have little doubt that this is a Greenlandic shark.  The shape and size fit perfectly so, unless someone tells me otherwise, that’s what it is.  Apologies for the poor image but I can’t imagine ever seeing one again.  Click on the image to enlarge it and see if you can make it out.  Observations are always welcome…

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