Source : Webster's Revised Unabridged Dictionary (1913)

Sea eagle \Sea" ea"gle\
   1. (Zo["o]l.) Any one of several species of fish-eating
      eagles of the genus {Hali[ae]etus} and allied genera, as
      the North Pacific sea eagle. ({H. pelagicus}), which has
      white shoulders, head, rump, and tail; the European
      white-tailed eagle ({H. albicilla}); and the Indian
      white-tailed sea eagle, or fishing eagle ({Polioa["e]tus
      ichthya["e]tus}). The bald eagle and the osprey are also
      sometimes classed as sea eagles.

   2. (Zo["o]l.) The eagle ray. See under {Ray}.

Source : WordNet®

sea eagle
     n 1: large harmless hawk found worldwide that feeds on fish and
          builds a bulky nest often occupied for years [syn: {osprey},
           {fish hawk}, {fish eagle}, {Pandion haliaetus}]
     2: any of various large eagles that usually feed on fish