How do I describe a whale in a "scintific" version?

scientific?

http://www.google.com/search?q=scientific+description+whale&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7SUNA

Ignoring the second link, there are several sites here that should get you going.

Please re-post when you have a draft, and someone here will give you feedback.

=)