I enjoyed it
Thing about the salinity of the water, surely as the temperature dropped, more ice would form and so the salinity would go back up and the "north atlantic current" would start up again?
And is the north atlantic current the same as the gulf stream as I'm sure the NAC was shown to come up africa to us, then head for America, where as I'm pretty sure the gulf stream comes up from the gulf of mexico across away from america to us, hence it's name...