1SEPTEMBER2023•VOL381ISSUE6661927SCIENCEscience.orgEDITORIALHumanandenvironmentalhealthareinextricablylinked.Yetoceanecosystemhealthisdecliningbecauseofanthropogenicpollution,overexploi-tation,andtheeffectsofglobalclimatechange.Theseproblemsaffectbillionsofpeopledepen-dentonoceansfortheirlives,livelihoods,andcul-turalpractices.Theimportanceofoceanhealthisrecognizedbyscientists,managers,policy-makers,non-governmentalorganizations,andstakeholdersincludingfishers,recreationalists,andculturalpractitioners.Sowhyaretheoceansstilldegrading?Sustainablecareofthisvastresourceneedsanewapproachiffuturegenera-tionsaretoinheritalegacyofvitalmarineecosystems.Althoughco...