This volume reflects the work of the Trans-Tasman Maritime Security Project, which comprises a group of Australian and New Zealand scholars with back- grounds in international law, international relations and maritime security. Our aim has been to identify the issues that particularly affect Australia and New Zealand’s maritime security and to undertake research that evaluates those issues from legal and political perspectives, and propose methods for improving mari- time security in the two countries. While the focus of the work is Australia and New Zealand, the scope extends to regional considerations (addressing matters related to Pacific island states, South East Asia and the Antarctic and sub- Antarctic region), strategic.