Physical appearance and biologyEdit
Behaviour and traitsEdit
Halisaurus was a small mosasaur. Like its relatives, it had a streamlined body with a powerful tail which propelled it through the water with tremendous speed. Halisaurus hunted small marine animals as well as the aquatic sea bird Hesperornis. This mosasaur mainly lived in coral reefs.
A Halisaurus as well as several other predators including Xiphactinus and sharks hunted a colony of diving Hesperornis. In the frenzy, the attacking Halisaurus left the scene and went back to the coral reef it lived in.
Behind the scenesEdit
List of appearancesEdit
- Halisaurus as well as all the mosasaurs are now believed to have a bi-lobed fluke instead of an eel-like tail.
- A discovery in 2014 revealed that all mosasaurs was similar in colour to modern leatherback turtles.