Sea dog \Sea" dog`\
   1. (Zool.) The dogfish.
      (b) The common seal.
          
[1913 Webster]


   2. An old sailor; a salt. [Colloq.]
      
[1913 Webster]

Seal \Seal\ (s[=e]l), n. [OE. sele, AS. seolh; akin to OHG.
   selah, Dan. sael, Sw. sj[aum]l, Icel. selr.] (Zool.)
   Any aquatic carnivorous mammal of the families {Phocidae} and
   {Otariidae}.
   
[1913 Webster]


   Note: Seals inhabit seacoasts, and are found principally in
         the higher latitudes of both hemispheres. There are
         numerous species, bearing such popular names as {sea  lion}, {sea leopard}, {sea bear}, or {ursine seal},
         {fur seal}, and {sea elephant}. The bearded seal
         ({Erignathus barbatus}), the hooded seal ({Cystophora  cristata}), and the ringed seal ({Phoca foetida}), are
         northern species. See also {Eared seal}, {Harp seal},
         {Monk seal}, and {Fur seal}, under {Eared}, {Harp},
         {Monk}, and {Fur}. Seals are much hunted for their
         skins and fur, and also for their oil, which in some
         species is very abundant.
         
[1913 Webster]


   {Harbor seal} (Zool.), the common seal ({Phoca vitulina}). It
      inhabits both the North Atlantic and the North Pacific
      Ocean, and often ascends rivers; -- called also {marbled  seal}, {native seal}, {river seal}, {bay seal}, {land  seal}, {sea calf}, {sea cat}, {sea dog}, {dotard},
      {ranger}, {selchie}, {tangfish}.
      
[1913 Webster]