World Ocean Day Highlights Brazil's Scientific Role and Global Ocean Crisis

World Ocean Day on 8 June marked the release of the third World Ocean Assessment (WOA III), which warns of accelerating ocean warming, expanding plastic pollution, loss of oxygen and more extreme weather. The 1 600‑page report, compiled by over 550 experts from 86 countries, notes that only 27.3 % of the seafloor has been mapped and that 57 % of seabird species are in decline, although the rate of new threatened species has slowed.

Brazil played a prominent part in the assessment, contributing 40 scientists – the third‑largest national team after the United States and the United Kingdom – and is preparing to host the 2027 Global Ocean Decade Conference. Brazilian officials have linked the report to national actions: the Senate discussed a new fisheries law (PL 4789/2024) that seeks to modernise fishery management and recognize women fishers, while ongoing plastic‑waste legislation (PL 2524/2022) aims to curb single‑use items that add roughly 1.3 million tonnes of plastic to the oceans each year.

Regional efforts were also highlighted. Portugal announced a goal to protect 30 % of its marine area by 2026, adding the D. Carlos Marine Reserve that stretches from Sagres to the Madeira archipelago. The global call for robust Marine Protected Areas echoes the UN‑mandated Target 30 % for land and sea by 2030.

Together, the initiatives underscore the urgent need for international cooperation, expanded ocean observation and translating scientific knowledge into concrete policy to safeguard the planet’s life‑supporting oceans.