The BBNJ Agreement becomes the third implementing agreement to the United Nations Convention on the Law of the Sea. This historic treaty will enable international efforts to protect biodiversity on the high seas, the ocean areas outside of national waters.A new global agreement provides a pathway for improved governance, conservation and sustainable use of biodiversity in the high seas. The new High Seas Treaty addresses many of the governance gaps that have plagued the ocean, setting out clearer ways to conserve biodiversity in the high seas. In a new paper, scientists detail how the new High Seas Treaty can help protect marine species within the warming waters of a changing ocean. For the first time, United Nations members have agreed on a unified treaty to protect biodiversity in the high seas. The treaty will create a new body to manage conservation of ocean life and establish marine protected areas in the high seas.