Mosasaurus Mannequin is an educational drawing application designed for artists of all skill levels. The app allows users to create and manipulate a 3D poseable model of a Mosasaurus, making it easier to visualize and draw the prehistoric creature in various poses. It features a range of tools including animations that showcase natural movements, adjustable camera settings, and customizable backgrounds, enhancing the drawing experience significantly.

Users can also select individual 'bones' to reposition limbs and achieve desired poses, while skins can be applied to add detailed textures to the drawings. The app includes options to adjust lighting with four different lights to enhance realism, and a grid feature to assist with proportional drawing. While the app is free to try, additional skins and animations are available through in-app purchases.