Complex sentence: The released juveniles will take between four and five years to grow to marketable size, several studies have estimated very good wild survival for hatchery reared lobsters and have even estimated the contribution to fisheries of such programs.
Split into simpler sentences: The released juveniles will take between four and five years to grow to marketable size. Several studies have estimated very good wild survival for hatchery-reared lobsters and have even estimated the contribution to fisheries of such programs.