What is plesiosaurs life cycles?

PlesiOSaurs, marine reptiles from the Mesozoic era, likely had life cycles that included live birth rather than laying eggs, as suggested by fossil evidence of embryos found in some specimens. They were believed to be long-lived creatures, with a developmental stage that involved juvenile growth before reaching maturity. As carnivorous predators, they would have relied on a diet of fish and other marine organisms throughout their lives. Overall, plesiOSaurs exhibited reproductive strategies similar to modern marine reptiles, emphasizing the importance of nurturing their young in a competitive ocean environment.