Complex sentence: The diamond stingray has the lowest growth rate of any stingray species yet studied: males reach sexual maturity at around across and 7 years of age, while females grow slower still, reaching maturity at around across and 10 years of age.
Split into simpler sentences: The diamond stingray has the lowest growth rate of any stingray species yet studied. Males reach sexual maturity at around across and 7 years of age, while females grow slower still, reaching maturity at around across and 10 years of age.