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‘Decade Expedition’ Discovers New Ecosystems in Red Sea

The recently discovered blue holes in the Red Sea. (Saudi National Center for Wildlife)
The recently discovered blue holes in the Red Sea. (Saudi National Center for Wildlife)
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‘Decade Expedition’ Discovers New Ecosystems in Red Sea

The recently discovered blue holes in the Red Sea. (Saudi National Center for Wildlife)
The recently discovered blue holes in the Red Sea. (Saudi National Center for Wildlife)

After around five months of search in the Red Sea, the Decade Expedition announced that it has discovered several new ecosystems and rare maritime species.

The expedition involved 126 researchers and was launched by the National Center for Wildlife. The discoveries were featured in 77 new research papers.   

The announcement was made during the “Red Sea Decade Expedition”, a symposium that hosted specialized maritime experts and scientists from around the world, and concluded in Riyadh on Monday.

The expedition was aimed at exploring the unique biodiversity along the Saudi coasts, from bacteria to whales, in addition to creating a database on the statuses of ecosystems and the endangered species that need protection.   

The researchers detected over 10 blue holes, incubating unique ecosystems. For the first time ever, the DNA sequencing results confirmed the presence of great white sharks in the Red Sea. The expedition unveiled thousands-years-old active thermal vents and massive microbial formations northern of the Farasan Island that have further confirmed the presence of unique marine life.   

They found that sharks can dive deeper in the warm waters of the Red Sea, the deepest in the world, in a lower temperature of around 21 degrees Celsius. Also unveiled is an active, dense, resilient community of deep-sea lantern fish, thriving in low oxygen conditions.    

Noteworthy behavioral findings include Bryde’s whales reproducing in the Red Sea, challenging previous assumptions about their migration, and dolphins using blue holes as sanctuaries to protect their young from the attacks of larger fish, highlighting complex marine behaviors.  

The results of the expedition also revealed that marine creatures in the deep Red Sea prey on deep layer fish during their migration, a phenomenon that hasn’t been spotted anywhere in the world so far. Through DNA sequencing and analysis of seabed deposits, researchers have traced the region’s biological diversity changes over the last 1,800 years.

The discovery includes the largest assortment of rock samples in the Red Sea, which has yielded critical data on geological activities that support biological diversity. The expedition recorded the most resilient deep-sea corals known, capable of surviving without oxygen and at temperatures up to 33 degrees Celsius.  

It also compiled the first Red Sea microorganism gene catalog, offering precise data on the genetical resources, and opening the door for a range of potential applications in several industries, including pharmaceuticals, food, energy and beauty. Bioluminescence was discovered in the depths of the Red Sea with 3 types of microbial bacteria in its composition, according to DNA analyses.  

Launched by the National Center for Wildlife and supported by the Saudi government, the Red Sea Decade Expedition was designed to carry out the first inclusive exploration of regions that weren’t studied before in the Red Sea, starting from the Afifi region (southern Red Sea) and extending to the Aqaba Bay (northern Red Sea), as part of the Saudi plan to protect the environment, enhance its sustainability and enrich the biodiversity, in line with the Saudi Vision 2030 and the Saudi Green Initiative.   

The international team from 18 countries, collaborating with institutions like King Abdullah University of Science and Technology (KAUST), utilized state-of-the-art technology for this 19-week mission.   

The team also made sure to produce documentaries and media content on the explored areas, in order to provide a clear understanding of the Red Sea environments and the unique biodiversity that characterizes its ecosystem.

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Varieties

‘More and Faster’: UN Calls to Shrink Buildings’ Carbon Footprint

Snow capped mountains are seen behind the downtown Los Angeles skyline, California, US, March 7, 2025. (Reuters)
Snow capped mountains are seen behind the downtown Los Angeles skyline, California, US, March 7, 2025. (Reuters)
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‘More and Faster’: UN Calls to Shrink Buildings’ Carbon Footprint

Snow capped mountains are seen behind the downtown Los Angeles skyline, California, US, March 7, 2025. (Reuters)
Snow capped mountains are seen behind the downtown Los Angeles skyline, California, US, March 7, 2025. (Reuters)

Countries must move rapidly to slash CO2 emissions from homes, offices, shops and other buildings -- a sector that accounts for a third of global greenhouse gas pollution, the United Nations said Monday.

Carbon dioxide emissions from the building sector rose around five percent in the last decade when they should have fallen 28 percent, according to a new report by the United Nations Environment Program (UNEP).

It said emissions had plateaued since 2023 as climate policies began to have an impact, particularly green building standards, the use of renewable energy and electrified heating and cooling.

But the building sector still consumes 32 percent of the world's energy and contributes 34 percent of CO2 emissions, the report found.

"The buildings where we work, shop and live account for a third of global emissions and a third of global waste," said Inger Andersen, Executive Director of UNEP.

"The good news is that government actions are working. But we must do more and do it faster."

She called on nations to include targets to "rapidly cut emissions from buildings and construction" in their climate plans.

The report said that while most of the countries that signed up to the 2015 Paris climate deal -- nearly 200 have signed -- mention the sector, so far only 19 countries have sufficiently detailed goals in their national carbon cutting plans.

The report said that as of 2023, important metrics like energy-related emissions and the adoption of renewable energy "remain well below required progress rates".

That means that countries, businesses and homeowners now need to dramatically pick up the pace to meet the 2030 emissions reduction targets.

- 'Critical challenge' -

Direct and indirect CO2 emissions will now need to fall more than 10 percent per year, more than double the originally envisaged pace.

The rollout of renewables is a similar story.

The share of renewables like solar and wind in final energy consumption rose by only 4.5 percentage points since 2015, well behind the goal of nearly 18 percentage points.

That now needs to accelerate by a factor of seven to meet this decade's goal of tripling renewable energy use worldwide, UNEP said.

The report urged countries to accelerate the roll-out of renewable technologies and increase the share of renewables in the final energy mix to 46 percent by 2030 -- a rise of around 18 percent.

It also called on policymakers to increase energy efficiency retrofits to include better design, insulation and the use of renewables and heat pumps.

More work also needs to be done to improve the sustainability of materials like steel and cement, whose manufacture accounts for nearly a fifth of all emissions from the building sector.

But the report did say that circular construction practices were increasing in some areas, with recycled materials accounting for 18 percent of construction inputs in Europe.

The authors urged all major greenhouse gas emitters to take action by introducing zero-carbon building energy codes by 2028, and called on other countries to create and tighten their regulations within the next 10 years.

The report highlighted positive national policies from China, France, Germany, Mexico and South Africa among others.

But it said financing remained a "critical challenge".

In 2023, it found that global investment in energy efficiency in buildings fell seven percent from a year earlier to $270 billion, driven by higher borrowing costs and the winding back of government support programs, notably in Europe.

Those investments now need to double -- to $522 billion -- by 2030, it said.