Note: Single-source report; awaiting corroboration.
The Third World Ocean Assessment, a comprehensive 1,600-page report by 550 experts from 86 countries, underscores the urgent need for scientific knowledge and global cooperation to address mounting ocean pressures. At a preview event in New York City, participants described the report as “possibly the most important book about the ocean ever written.”
Steven Hill, Assistant Secretary-General for Legal Affairs at the United Nations, said the assessment builds a foundation for understanding critical changes, including climate-driven shifts and biodiversity loss, and helps guide effective actions locally and globally.
Large parts of the ocean, especially the deep sea, remain poorly understood despite decades of research. Noted oceanographer Sylvia Earle highlighted how much remains unknown, cautioning that while we know more than ever before, there is still much to learn, reflecting the complexity of ocean science.
Mr. Hill stressed that knowledge alone is not enough, and decisions must be grounded in the best available science as ocean ecosystems near critical thresholds. He also emphasized the importance of inclusive knowledge that integrates diverse disciplines, regions, and especially the perspectives of Indigenous Peoples and local communities to ensure effective and equitable ocean stewardship.