Action Theme for 2026

Strong Marine Protected Areas for Our Blue Planet

Happy World Ocean Day in June and Year-round!

Join with thousands of organizations and millions of people worldwide on and around the 8th of June! This year the 8th is a Monday, so make it a long weekend or week-long celebration!

The World Ocean Day 2026 Action Theme – Strong Marine Protected Areas for Our Blue Planet – will guide global action over the coming years. It brings together the momentum of recent multi-year action themes – Catalyzing Ocean-Climate Action and Protecting at Least 30% of Lands, Waters, and Ocean by 2030 (30×30) – and aligns powerfully with the recent ratification of the High Seas Treaty to protect biodiversity beyond national jurisdiction.

World leaders have committed to 30×30 both within national waters and across the High Seas – an area covering two-thirds of the ocean and nearly one-half of Earth’s surface. Now they need to follow through!

These ocean waters regulate the climate, support extraordinary biodiversity, sustain livelihoods, and hold untapped scientific and medical potential.

Creating strongly regulated Marine Protected Areas (MPAs) is essential to turning global commitments into real conservation outcomes. Implementation will require a powerful collective effort, accountability, and sustained public engagement – and if we work together, we can achieve this ambitious goal by 2030!

World Ocean Day helps unite the world each June! Join in and, together, we can accelerate progress and help create a global network of MPAs that restores ecosystems, builds resilience, and inspires hope for the future.

The Action Theme is universal. Whether coastal or landlocked, every nation depends on a healthy ocean for climate stability, biodiversity, and human well-being. Protection of the ocean – including the High Seas – is a shared responsibility for our blue planet.

Get ready! Early each year, WorldOceanDay.org features new tools, resources, and messaging for you to use as you wish, for World Ocean Day and throughout the year. We invite you to join with us and others around our blue planet to make World Ocean Day 2026 the most impactful yet – and to help turn global commitments into lasting protection.

Visit the Take Action pages for ideas, resources, and ways to get involved.

Stay informed and active! Visit our Updates (blog) and follow @WorldOceanDay on social media.

Through 2030, we are also keeping up the pressure on global leaders to follow through on their commitments to 30×30.

The historic 30×30 commitments announced at the recent UN Biodiversity Conference and for a High Seas Treaty were huge wins for our blue planet and also a big win for youth, our collaborating partners, and the World Ocean Day network of over 2,000 organizations. Now, global leaders need to follow through, as implementation is essential!

Thanks to all youth leaders and organizations who have been actively helping on this worldwide campaign.

It’s important to keep the momentum going! You can help by amplifying action at your events and activities in the months and years ahead.

Together, we can make sure that our national leaders follow through on their commitments and ensure that at least 30% of lands, waters, and ocean get protected by 2030!

Why are we prioritizing the 30×30 goal?

Leading scientists worldwide have said that a healthy ocean is a critical part of the solution to the climate and biodiversity crises.

By supporting 30×30, we can protect our planet’s life support systems – specifically the interconnected issues of ocean, climate, and biodiversity.  Currently, less than 17% of land and 8% of the ocean worldwide is protected.

The good news is, due to the efforts of the growing global 30×30 movement, including those involved in the World Ocean Day network, our nations’ leaders made a global commitment to 30×30 during the United Nations Biodiversity Conference (COP15) in late 2022 and for a High Seas Treaty in early 2023.

The Treaty reached the required 60 ratifications in September 2025 and entered into force on 17 January 2026. Now, governments must keep ratifying and move quickly into implementation so High Seas MPAs and other protections can be created and effectively managed.

30×30 was the World Ocean Day Action Theme for several years, and now with the Action Theme centered around Ocean & Climate Action, we are collectively addressing 30×30 and other interconnected issues that are important for protecting our ocean and stabilizing our climate.

With your help, and by working with a growing network of youth and organizational leaders worldwide, together we will continue to strengthen the global movement to protect at least 30% of our blue planet by 2030 and safeguard our future.

Following a 4-year campaign with The Ocean Project collaborating with the World Ocean Network and other global partners, tens of thousands of people signed both onsite and online petitions to the United Nations to officially recognize World Ocean Day as 8 June each year. The UN General Assembly passed a resolution doing so in December 2008. Each year they organize their own theme. For 2026 it is: Reimagine. For more on the history of World Ocean Day, please see the "About" page of this site.