World Ocean Day is an annual global celebration held on 8 June to raise awareness about the critical role the oceans play in sustaining life on Earth and to promote individual and collective action to protect marine environments.

Our oceans cover 70% of the planet’s surface and play a vital role in sustaining life. From providing oxygen for every second breath we take to feeding billions of people and hosting 80% of the world’s biodiversity, the ocean is essential to our existence.

The official World Oceans Day theme for 2026 is REIMAGINE: Beyond the world we know, a new relationship with our ocean.