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Coral bleaching spreads to Maldives, devastating spectacular reefs.

Coral bleaching spreads to Maldives, devastating spectacular reefs.

Coral reefs are the most diverse of all marine systems. They are however, threatened by global change and we can only predict how it will impact these reef systems if we first understand how they work.

Coral reefs are the most diverse of all marine systems. They are however, threatened by global change and we can only predict how it will impact these reef systems if we first understand how they work.

Coral reefs are under stress throughout the world. To better understand the molecular mechanisms underlying coral biology and their genomic evolution, here we sequenced the genome and transcriptomes of elegance coral Catalaphyllia jardinei (Euphylliidae). This monotypic genus stony coral is widespread but rare, being found across the Indo-West Pacific, from the northern Indian Ocean, Australia, Philippines, to the South China Sea. Due to its popularity among aquarium hobbyists, it is an overexploited species collected in large quantities from the wild for aquarium trade. The assembled genome is ~ 651.3 Mb in total length and of high physical contiguity with a scaffold N50 size of 28.9 Mb. The gene copy numbers of abiotic stress regulator (heat shock protein family genes) and neuropeptides (GLWamide, GRFamide, PRGamide and HIRamide) are similar to other sequenced anthozoans, and we have also identified the first set of sesquiterpenoid biosynthetic pathway genes in coral. Sequencing of small RNAs allows us to identify 35 microRNAs in C. jardinei and update the number of conserved microRNAs in cnidarians. This study established a foundation for further investigation into the roles of sesquiterpenoids and microRNAs in development of coral and understand their responses to climate change. Due to the easiness to culture C. jardinei in reef tanks and the established resources in this study, we propose this species be adopted as a new laboratory model in environmental and ecological experiments aiming to understand coral biology and responses to environmental stressors.

Sea sponge study sheds light on coral reefs.

CSIRO is working with local partners in the Maldives to develop coral restoration methods to assist with reef recovery.

Today, the Khaled BIN SULTAN Living Oceans Foundation published our findings on the state of coral reefs in the Chagos Archipelago. This research mission gave us the chance to study some of the most isolated and well-protected coral reefs in the world. Our research, based on thousands of scientific surveys, found reefs in the Chagos Archipelago were some of the most diverse and had a higher density of fish than all of the reefs studied on the Global Reef Expedition, the largest coral reef survey and mapping expedition in history.

Restoring coral reefs, with some help from local fish.

Restoring coral reefs, with some help from local fish.

The third global bleaching event took its toll on Western Australia's super-corals.

Coral reefs off Tanzania's coast are being destroyed, most beyond repair.

These resilient corals can handle conditions that would decimate other species.

These resilient corals can handle conditions that would decimate other species.

Preliminary findings of a comprehensive scientific survey examining the impact of the climate change-related 2016 mass bleaching in the Maldives indicate that all reefs surveyed were affected by the event. Approximately 60% of all coral colonies assessed - and up to 90% in some sites - were bleached.

Preliminary findings of a comprehensive scientific survey examining the impact of the climate change-related 2016 mass bleaching in the Maldives indicate that all reefs surveyed were affected by the event. Approximately 60% of all coral colonies assessed - and up to 90% in some sites - were bleached.

A new study published in the international journal Nature Communications has revealed how Western Australia's coral reefs have been affected by changing ocean currents, rising sea surface temperatures and sea level variability.

Indian Ocean tsunamis destroyed one of the world's most important silk-route ports in the 15th century, new research finds.

Indian Ocean tsunamis destroyed one of the world's most important silk-route ports in the 15th century, new research finds.

As well as being a beautiful species capable of changing its colour, shape and even gender, new research published today shows that parrotfish, commonly found on healthy coral reefs, can also play a pivotal role in providing the sands necessary to build and maintain coral reef islands.

As well as being a beautiful species capable of changing its colour, shape and even gender, new research published today shows that parrotfish, commonly found on healthy coral reefs, can also play a pivotal role in providing the sands necessary to build and maintain coral reef islands.

As well as being a beautiful species capable of changing its colour, shape and even gender, new research published today shows that parrotfish, commonly found on healthy coral reefs, can also play a pivotal role in providing the sands necessary to build and maintain coral reef islands.

Saving Coral Reefs Depends More on Protecting Fish Than Safeguarding Locations.

Saving Coral Reefs Depends More on Protecting Fish Than Safeguarding Locations.

As if coral didn't have enough to deal with.

As if coral didn't have enough to deal with.

In the Maldives, one of the world's lowest-lying countries, new and urgent solutions are needed to protect the islands from the impacts of climate change. Tourist resort owners and local communities are joining government authorities in efforts to make the islands more resilient.

The balmy islands of Seychelles couldn't feel farther from Antarctica, but their fossil corals could reveal much about the fate of polar ice sheets.

The balmy islands of Seychelles couldn't feel farther from Antarctica, but their fossil corals could reveal much about the fate of polar ice sheets.