The article analyses trade and investment effects on Pacific island marine resources. Increasing fishing effort and new technology appears to be depleting a major tuna species. There are also repercussions of globalisation on the sustainability of vital inshore marine resources. If the incidence of El Niño events increases as a result of global warming then the national economies of some small island states will be impacted. In the long-term an ocean level rise will put small island and low atoll nations at risk. The article concludes by suggesting roles for aid in mitigating globalisation impacts.