Turtles have rigid beak-like mouths with strong jaws and ridges, which help break their prey’s shell. Turtles having soft lips just swallow the food besides grinding or have modifications based upon whether they are carnivore herbivores or an omnivore.
Carnivorous turtles have sharp horny beaks which help them to catch and pierce food hence they feed mainly on meat. However herbivorous turtles have flat and broad beaks which allow mashing and grinding fruits and plants.
They have a relatively short beak and less serrated ridges. Omnivorous turtles have mixed adaptations with pointed beaks but not as much as carnivorous turtles. Turtles use their tongue muscles for swallowing and other tearing purposes.