Preserving and using the deep sea: scientists call for more knowledge to enable sustainable management
Reports and Proceedings
Updates every hour. Last Updated: 1-May-2025 11:08 ET (1-May-2025 15:08 GMT/UTC)
11 April 2025 / Brussels / Kiel. Led by Professor Dr Sylvia Sander of the GEOMAR Helmholtz Centre for Ocean Research Kiel, a group of internationally renowned marine scientists has published a Future Science Brief on deep-sea research. The report provides a comprehensive analysis of the current state of knowledge and offers recommendations for how both the exploration and management of the deep sea can be made more sustainable. The scientists issue a clear warning: without a thorough understanding of ecosystem processes and biodiversity, informed decisions on the sustainable use and protection of the deep sea are not possible. They are now calling for targeted research to close these knowledge gaps and ensure long-term preservation of the deep sea. The report is aimed at policymakers, researchers and international organisations and is being launched today [11. April, 2 PM (14:00) CET] in a dedicated online webinar.
An initiative between Cargo marine vessel (MV) Oleander, WHOI and ASU BIOS is contributing to ocean observations and data collection, and offering peer-reviewed data.
Since the 1970s, scientific equipment has been mounted on three different container ships operating consecutively on the “Oleander Line,” which runs between New Jersey and Bermuda, resulting in decades of scientific data.
The newest MV Oleander came into service in 2019, and is now providing regular water column, sea surface, and atmospheric measurements.
The project is a part of WHOI’s Science RoCs (Research on Commercial Ships) initiative, which aims to equip many more commercial vessels with sensors to measure physical, chemical, and biological characteristics of the ocean along the world’s major shipping routes.
Transplanting seagrass meadows? Yes, it’s possible – and it works! The proof is in Monaco, with the successful transplantation of 384 m² of Posidonia oceanica. Posidonia oceanica is an essential underwater plant for marine biodiversity: it produces oxygen, shelters numerous species, and protects coastlines from erosion. Until now, these meadows were thought to be non-transplantable… but this eight-year study proves otherwise. This technique shows that transplantation can become a truly viable ecological solution to coastal urbanisation.
What is the role of dissolved organic matter in the deep sea? In a study relating to this question, researchers from the Universities of Bremen and Oldenburg have investigated the composition of dissolved organic matter (DOM) in detail. Their samples were obtained during an expedition to the Guaymas Basin in the Gulf of California.
In 1962, when environmentalist and author Rachel Carson penned "Silent Spring," alerting the world to the dangers of the pesticide DDT, it was the reproductive threat to birds – the bald eagle in particular – that spurred people to action.
Six decades later, Rutgers University–New Brunswick researchers are taking the measure of another global environmental pollutant by drawing parallels to the crisis Carson identified. This time, the pollutant is mercury, and the sentinels are penguins living in the farthest reaches of the Antarctic Peninsula.
“With mercury, there’s an analogy to DDT,” said John Reinfelder, a professor in the Department of Environmental Sciences at the Rutgers School of Environmental and Biological Sciences, and co-author of a study published in Science of the Total Environment examining mercury levels in the flightless, aquatic birds.
The ricefield eel (Monopterus albus) is the only protogynous hermaphrodite freshwater fish. How this species changes its sex remains elusive. By performing comparative transcriptome analysis, we tentatively propose that a temperature-induced sex reversal mechanism is at work in ricefield eel, similar to that in embryonic reptiles. We show that warm temperature induces the expression of male sex determination genes in ovarian tissues, and that temperature-induced up-regulation of male genes depends on Trpv4, a thermosensor that can sense thermal cues.