There are eight species of sea eagles, all members of the genus Haliaeetus. The most well known is the bald eagle. Another sea eagle, the white-tailed eagle, is the largest eagle in Europe.
Sea eagles range in size from the 6-pound Sanford's sea eagle to the 15-pound Steller's sea eagle. Other species are the white-bellied sea eagle, the African fish eagle, the Madagascar fish eagle and the Pallas' sea eagle.
All sea eagles are primarily fish eaters but take other prey; one bald eagle was seen carrying a mule deer fawn weighing 15 pounds. Sea eagles are believed to be closely related to fish eagles of the genus Ichthyophaga.