http://www.flickr.com/photos/brynj/61362699/ by BrynJ Attribution-NonCommercial-NoDerivs 2.0

Penguins

There are four species of penguins that breed in Antarctica.

Adelie
Chinstrap
Emperor
Gentoo

http://www.flickr.com/photos/frenchy_rjp/100809134/
by frenchy_rjp's Attribution-NonCommercial-NoDerivs 2.0

Seals

There are four species of seals that breed in Antarctic waters.

Crabeater
Leopard
Ross
Weddell

http://www.flickr.com/photos/gliderking/69401411/
by GliderKing Attribution-NonCommercial-NoDerivs 2.0

Whales

There are 8 species of whales that are found in Antarctic waters.