The Collaborative International Dictionary of English v.0.48:

Fur \Fur\, a.
   Of or pertaining to furs; bearing or made of fur; as, a fur
   cap; the fur trade.
   [1913 Webster]

   Fur seal (Zool.) one of several species of seals of the
      genera Callorhinus and Arclocephalus, inhabiting the
      North Pacific and the Antarctic oceans. They have a coat
      of fine and soft fur which is highly prized. The northern
      fur seal (Callorhinus ursinus) breeds in vast numbers on
      the Prybilov Islands, off the coast of Alaska; -- called
      also sea bear.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Sea bear \Sea" bear`\ (Zool.)
   (a) Any fur seal. See under Fur.
   (b) The white bear.
       [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

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]