Those Transatlantic manatees

http://darrennaish.blogspot.com/2006/01/those-transatlantic-manatees.html

http://scienceblogs.com/tetrapodzoology/2010/05/10/those-transatlantic-manatees/

FU
The possibility should be mentioned that the purported manatees from Greenland, Scotland, and France may not necessarily have been Trichechus manatus crossing the Atlantic but rather Trichechus senegalensis wandering unusually far north (they're known from southern Mauritania at about 16° North).