Coelacanth
Coelacanth; a prehistoric fish once thought to be extinct found living in modern times. the coelacanth rescue mission strives to preserve these remarkable fish from the danger of extinction they now face.
http://www.dinofish.com/
Seamonsters A-Z
From dinosaurs to human ancestors - the bbc prehistoric life site has articles, spelletjes and information on bbc televisie and radio programmes.
http://www.bbc.co.uk/dinosaurs/chronology/seamonsters/index_all.shtml