Coral science is ready to act. It's time to push politicians.

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This may sound like a bureaucratic glitch, but scientists can’t move coral genetic material between countries fast enough to save the reefs. Coral science is ready to act, and now i's time to push politicians.

While marine heatwaves decimate coral reefs across the planet, international law is failing to keep up. Coral scientists have developed tools to boost resilience against the climate crisis, including assisted gene flow (AGF), where coral sperm, eggs or fragments are exchanged to spread traits like heat resistance. But right now, international collaboration is bottlenecked by outdated trade restrictions, permitting nightmares, and a lack of global coral protocols.

Coral reefs are bleaching, collapsing, and vanishing, while legal borders are blocking the solutions.

If nothing changes, the most powerful tools in coral conservation will remain locked behind paperwork.

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A patchwork of protection

Today, coral protection is left to individual countries, with wildly unequal results. Many coastal nations have enacted coral laws, but their strength varies.

For example, the US has a Coral Reef Conservation Act and even lists 25 coral species under the Endangered Species Act. Other countries rely on marine protected areas (MPAs) or specific bans on coral trade. And even many MPAs were drawn in remote areas, only the far-flung, “passively” protected reefs often get serious legal cover. In practice, this means most reefe, including those vital to dense coastal communities, lack firm legal safeguards.

There’s no global system for restoration, no standardised framework for genetic exchange, and no unified policy that treats coral as a planetary concern.

International treaties offer some framework (e.g. CITES licensing for coral trade, or the UN Convention on Biological Diversity), but none explicitly force nations to safeguard reef health beyond their own borders. A reef’s fate depends on its flag: country A may ban destructive fishing on its reefs, while country B’s reefs suffer unchecked. This patchwork leaves huge gaps and duplication, and no global “reef rescue” law, unlike the ozone treaty or whaling ban.

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Climate chaos knows no borders

In the last two years, successive marine heatwaves have blasted coral systems from the Great Barrier Reef to Raja Ampat to the Caribbean. Scientists now say even isolated thermal refuges offer no sanctuary: ocean heating has “reached a level where there is no longer any safe harbour” from coral bleaching. As temperatures and ocean acidity rise everywhere, every reef is at risk.

We already feel some consequences: with reefs dying, coastal storm protection and fish nurseries vanish. Countries around the world (from island nations to wealthy exporters) all suffer. But efforts to counteract this, like coral nurseries, scientific breeding programs, reseeding reefs… run into legal roadblocks. For example, in 2023 researchers bred “Flonduran” corals by crossing Florida and Honduran corals, then outplanted the hybrids on the reef. This was the first ever cross-border coral restoration, but it required special permissions and took years of preparation.

Without international coral biobanks and clear protocols, such lifesaving moves remain the exception, not the rule.

Right now, rules akin to plant seed-exchange or human tissue banks do not apply to corals. The new Science policy forum on coral restorations calls for revising those rules: “adapting existing rules for the exchange of non-commercial plant exchanges among herbaria and nurseries so that they can be applied to corals; establishing regional land-based coral biobanks; and leveraging political networks among overseas countries and territories to enable timely, cross-border coral exchanges”.

In other words, science has the blueprint for global action, but politics has not caught up.

Coral Bleaching in American Samoa. Before (Dec 2014) & After (Feb 2015). Credit: The Ocean Agency

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Lessons from global successes

We have faced urgent global environmental problems before, and found solutions only through collective action.

For decades, nations have met to save species and ecosystems beyond any one country. The 1986 global moratorium on commercial whaling is one example: seeing species crash, 88 nations agreed to a temporary ban, creating whale sanctuaries in the Southern and Indian Oceans. As a result, some whale populations are finally recovering.

Similarly, the 1987 Montreal Protocol on ozone-depleting chemicals was ratified by every country, phasing out 99% of those substances and reversing ozone hole growth. This treaty is “widely hailed as the world’s most successful international environmental treaty”. It shows what we can do when we treat a crisis as a shared responsibility.

Now we need the same spirit for reefs. In 2023 nations completed the long-awaited High Seas Treaty to protect biodiversity beyond national waters, even creating marine protected areas on the open ocean. This fills a “blaring gap”: only about 1% of the high seas is currently protected. Likewise, dozens of countries (75% of reef nations) have pledged to double reef protections and invest in reef restoration under the International Coral Reef Initiative.

International cooperation can work for nature if we organize to make it happen.

Image shows the recovery of the ozone layer from its worst state in 2017, following the current policies.

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Existing treaties can’t keep up

Corals fall through the cracks of global biodiversity treaties:

• The Convention on Biological Diversity (CBD) encourages reef protection but has no binding enforcement and lacks specific coral protocols.

  
  

• CITES controls coral trade but doesn’t distinguish clearly between commercial extraction and conservation transplants.

  
  

• The Convention on Migratory Species (CMS) applies to animals like whales and turtles, not sessile reef-builders.

  
  

• The International Coral Reef Initiative (ICRI), while influential, is not a treaty and has no legal authority.

  
  

In short: there’s no unified global regime for coral reefs. A reef’s survival still depends on where it sits on a map.

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It's time to push politicians

Leading coral scientists, including those from the Coral Restoration Consortium and the Australian Institute of Marine Science, are calling on the UN Environment Programme (UNEP/PNUMA) to lead urgent reforms. They recommend:

• Creating a multilateral coral conservation protocol to facilitate AGF and genetic transfers for conservation.

  
  

• Establishing regional coral biobanks, with governance models similar to the Svalbard Global Seed Vault.

  
  

• Revising CITES procedures to clearly distinguish non-commercial conservation translocations from trade.

  
  

• Harmonising national policies to support cross-border reef restoration.

  
  

If UNEP takes leadership now, there is still a chance to mobilise science across borders, before coral extinction becomes inevitable.

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What you can do

• Raise awareness. SHARE this story. Use your voice to add pressure.

• Join our campaign Corals Without Borders and send and email to the UN Environment Programme (PNUMA). Demand international leadership for coral rescue.

Take action here

• Support science. Fund biobanks, back coral research, and demand that reef-rich countries coordinate instead of compete.

• Demand legal reform. Coral reefs don’t stop at borders. Laws shouldn't either.

  
  

This is about ecological survival. Coral science is decades ahead of coral policy, and reefs won’t wait. It’s time for a global coral conservation agreement.

Coral Bleaching, American Samoa: Before (healthy Dec 2014), during bleaching (Feb 2015), and after (dead August 2015). Credit: The Ocean Agency