How did liopleurodons mate?

Answer 1

The male humped The female.

Answer 2

Liopleurodons likely mated similarly to modern marine reptiles, as they were also reptiles. They would have engaged in internal fertilization, where the male transferred sperm to the female's reproductive tract via a mating organ or cloaca. Courting behaviors such as displays and vocalizations may have also been part of their mating rituals.