A very large seal (Macrorhinus proboscideus) of the
   Antarctic seas, much hunted for its oil. It sometimes attains a length
   of thirty feet, and is remarkable for the prolongation of the nose of
   the adult male into an erectile elastic proboscis, about a foot in
   length. Another species of smaller size (M. angustirostris) occurs on
   the coast of Lower California, but is now nearly extinct.