Ocean Sustainability
Over 70% of the earth is covered in water, which serves as a vital resource human subsistence. Contamination and acidification pose major threats to aquatic health and biodiversity. Microbes offer a promising solution in their ability to breakdown contamination from oil spills and plastics. Applied microbiologists can play a significant part in understanding biodiversity, contributing to solutions, and encouraging stewardship.
South Australian algal bloom species the world’s most toxic harmful microalga yet recorded
The marine microalgae responsible for the most devastating effects of the South Australian harmful algal bloom (HAB) has now been shown to be the most toxic species of its kind ever studied.
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With microbial help, sponges use photosynthesis, boosting productivity of tropical coral reefs
In marine environments, sponges tend to eat other organisms to get their nutrients. A new study demonstrates how sponges may also use photosynthesis, with the help of symbiotic microbes, and suggests sponge-rich ecosystems should be added to assessments of carbon sequestration.
Common COVID-19 drugs may pose hidden risks to marine life, study finds
A new study suggests that several drugs widely used during the COVID-19 pandemic can be toxic to marine organisms, even at relatively low concentrations. Five pharmaceuticals were tested on nauplii of the brine shrimp Artemia salina.
Scientists discover how algae colonized corals, jumpstarting the growth of the world’s reefs
A research team questioned why algae are able to thrive inside the cells of coral? The finding could lead to new insights into why algae and coral are failing to thrive symbiotically and suggest ways to reestablish the connection and save the world’s reefs.
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Breakthrough for aquaculture: Oral vaccine protects fish from fatal nervous necrosis virus
A novel oral vaccine, that can be mixed into fish feed, provides an effective, practical and cost-effective method to protect fish from the highly deadly nervous necrosis virus.
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Deep-sea extremophile yields protein that forms super stable biofilm
Scientists have discovered a protein secreted by a deep-sea extremophile — an organism adapted to extreme environmental conditions — that self-assembles into a biofilm and is highly stable, boosting its potential for biomedical applications.
Emissions from plankton help in forming cloud seeds over the world’s oceans
For nearly fifty years, scientists have suspected that microscopic marine plankton play a role in cloud formation over the oceans. Now, an experiment has suggested that it may be more important than previously thought.
Corals show climate change is reshaping the rules of survival
Which species benefit from climate change, and which are coming under pressure? Using corals as an example, researchers demonstrated that even seemingly successful life strategies can lose their advantage when environmental conditions change.
Decline in plankton across North East Atlantic sends stark warning for ocean health
A new study has used more than six decades of data to show that plankton abundance is declining across vast swathes of the North East Atlantic – a region covering the Atlantic Ocean from Portugal to Norway, and the entirety of the North Sea.
Global assessment of ocean warming impacts on marine ecosystems
New study reveals that year‑round ocean heating by 1.5°C drives over 200 documented marine ecosystem disruptions.
Global port microbiomes reveal hidden biosecurity signals
By analyzing more than 16 million 16S rRNA gene sequences from 1,045 port water samples collected in 23 cities across five continents, a study has found clear biogeographic patterns, a core set of dominant bacterial genera, and widespread potential pathogens.
Fungi help lock carbon into Arctic fjord sediments
A new study shows that fungi may play a surprisingly important role in keeping carbon locked into the seafloor. Researchers have found that marine fungi living in sediments efficiently assimilate dissolved organic matter and retain it as microbial biomass, rather than allowing it to be rapidly remineralised.
How sea-ice microbes survive the Southern Ocean’s harsh winter, and the implications for climate change
New study reinforces the importance of the Southern Ocean marginal ice zone as a critical hotspot for global sulfur cycling where biogeochemical processes for climate regulation are enhanced.
Microbial research captured among winning science images
Microbial research features among some of the winning images in Nature’s 2026 Scientist at Work photography competition. Microbiome sampling of whale sharks, algal blooms, and a coral probiotics village feature among five spectacular images showcasing the diversity and challenges of scientific research.
Scientists just found 4 new species of underwater ‘living pink rocks’ that help to store carbon
Rhodoliths may look like small rocks on the seafloor, but they’re actually living algae that create habitats for marine life and contribute to long-term carbon storage. The deeper ‘low-light’ waters off Japan’s Tanegashima Island harbor a surprisingly distinct and diverse community, including four species completely new to science.
Why plastic lingers: Water chemistry slows nature’s cleanup
In a new study designed to mimic real environmental conditions, researchers found that the chemical makeup of natural waters significantly delays the breakdown of polystyrene, a common plastic used in packaging and food containers. Because sunlight cannot effectively initiate the degradation process, microbes cannot finish the job.
Biologist dives beneath Antarctica sea ice to study the impact of climate change
One biologist is studying the genetic diversity of red algae to see how this vital part of Antarctica’s underwater ecosystem is affected by climate change. Answering that question is becoming increasingly important as Earth’s warming climate causes Antarctica’s sea ice to recede farther with every passing year.
Researcher efforts to reproduce corals shared with TV cameras
Scientists at Nova Southeastern University are sharing a rare look at a marine mission that aims to pump life back into coral reefs. Researchers waiting for coral-spawning hope the project will be a game-changer in the South Florida ecosystem.
Researcher discovers single-celled organism that transforms into cannibalistic supergiant
Researchers have discovered a microscopic organism that can transform into a cannibalistic ’supergiant’ that drastically changes size, shape, and behavior, and abandons filter-feeding to hunt and consume their genetically identical relatives.
Arctic river deltas at risk from mounting pressures
Researchers have performed a detailed calculation of the amount of carbon stored in permafrost in Arctic river deltas. In a new study, they point out the risks endangering the storage function of these highly sensitive landscapes due to rapid climate change.
Scientists map the microbes behind a climate-regulating gas in India’s busiest estuary — a first
When bacteria in the water and sediment break dimethylsulfoniopropionate down, they release dimethylsulfide (DMS), a gas that drifts into the atmosphere and helps form clouds by seeding cloud condensation nuclei. A new paper reports the first-ever study of DMSP concentrations and the bacteria that degrade it along the entire length of the Cochin Estuary.
New climate-based tool predicts coral bleaching months in advance
Researchers found that coral bleaching on a Caribbean island occurs when three major climate patterns in the Pacific and Atlantic Oceans align in specific ways that intensify ocean warming. They created a new, early-warning tool called the Bleaching Event Early Predictor (BEEP).
Scientists map the ocean’s invisible workforce
A new study identifies a small set of “metabolic niches” — or functional roles — that help explain how marine microbes grow, compete for resources and recycle carbon around the globe. The microbes are incredibly diverse, but their behavior can be grouped into a manageable number of strategies.