Articles tagged with Marine Life
A recent study by the University of California, Davis, highlights the devastating impact of H5N1 on pinniped populations worldwide. The virus has infected over 400 million poultry and tens of thousands of seals and sea lions, with significant consequences for conservation efforts.
Researchers have developed a new method for cleaning oil spills using massive fire whirls, which can burn through crude oil nearly twice as fast as in-situ fire pools. The results show that fire whirls produce 40% less soot and consume up to 95% of the fuel, leaving fewer harmful particles behind.
The discovery of mature silver European eels in Cyprus highlights the importance of river fragmentation and local environmental conditions on eel populations. The finding also underscores the need for urgent implementation of Eel Management Plans to conserve this critically endangered species.
A new study suggests that releasing pollack closer to their natural catch depths can significantly improve their chances of survival. The research found that releasing fish at these depths can increase survival rates from 56% to over 80%. This could have a positive impact on the long-term sustainability of recreational pollack fisheries.
A new study finds that food chains on modern Caribbean coral reefs are 60-70% shorter than they were 7,000 years ago. Individual fish have lost dietary specialization, leading to a compression of the distance between different trophic levels.
A new eDNA-based method has been developed to detect vulnerable Amazonian manatees in the remote western Amazon. The study reveals that these freshwater mammals are most commonly found in areas with low human activity.
Scientists captured rare view of beaked whales by listening to their natural sounds, revealing deep-diving behavior. The study provides the first detailed description of Gervais' beaked whale dives anywhere in the world.
Researchers use advanced technology to pinpoint locations of elusive beaked whales diving to the seafloor off the Louisiana coast. The study reveals new insights into their behavior and detection range, shedding light on these mysterious creatures.
Early marine algae like prasinophytes relied on Lhcp, a unique LHC complex with structural differences from plant LHCII. These similarities and differences may have enabled plants to transition from oceans to land, driven by the stabilization of trimer architecture through pigment-protein interactions.
A new study characterizes the sounds produced by flying gurnards, revealing two distinct types of grunt-like sounds that differ in duration, frequency, and rhythm. The researchers also found that juveniles under 10 cm in length produce sounds from an early developmental stage.
A global study reveals signs of complete extinction in the Canary Islands, where a previously undetected mass mortality event was identified in mid-2022. The affected species is no longer capable of reproducing, potentially leading to local extinction with severe ecological consequences.
Research reveals that ancient tropical oceans had the highest oxygen concentrations during the Proterozoic Eon, driven by photosynthetic organisms producing oxygen. The study suggests that a critical threshold of atmospheric oxygen led to a shift in ocean biogeochemistry, fundamentally reorganizing oxygen distribution.
A new study reveals how beluga whales in Alaska's Bristol Bay survive through a surprising strategy: they mate with multiple partners over several years. This polygynandrous system helps maintain genetic diversity despite the population's small size and isolation.
A £3.7 million project aims to provide unprecedented analysis of mesophotic coral reefs' vulnerability to climate change and identify ways to protect them. The study will use state-of-the-art technologies to collect comprehensive data on biodiversity, health, and environmental parameters.
Research reveals that understanding marine mammal social networks is critical for predicting and managing disease outbreaks in oceans. Highly connected individuals, or 'super spreaders,' play a significant role in disease transmission.
A six-year acoustic tracking study reveals a predictable seasonal convergence of mature male and female tiger sharks off Olowalu, Maui, coinciding with the humpback whale calving season. The findings suggest an annual mating aggregation site for tiger sharks, contrary to their conventional understanding as solitary wanderers.
A joint study by Tel Aviv University and the University of Haifa discovered that a soft coral's tentacles drive rhythmic movements through a decentralized neural pacemaker system. The system enables each tentacle to perform independent movement while achieving precise collective synchronization.
Researchers from Shedd Aquarium tracked queen conch movements to estimate the space needed to protect breeding populations. The study suggests establishing a 330-meter spatial buffer around breeding areas to help protect conch populations and serve as a practical tool for local management.
Marine mammal experts use drone-based thermal imaging to measure dolphin surface temperature and respiration rates, detecting biologically meaningful changes in physiological state. The study validates the accuracy of drone measurements under controlled conditions, paving the way for safer health monitoring of marine mammals.
Researchers found coral reefs impose daily rhythms on nearby microbes, reshaping their composition and abundance. This daily pattern is stronger than seasonal differences, suggesting time of day is a critical factor in studying reef-associated microbial communities.
The platform integrates and analyzes multi-omics data from deep-sea organisms, providing a comprehensive resource for cross-species comparative and evolutionary studies. The database covers 68 species across seven phyla, with over 1,413 fossil records to support evolutionary analysis.
Researchers at the University of Zurich examined fossil records worldwide and found a consistent pattern: young shark species are more likely to go extinct. This challenges the long-held assumption that older species are less vulnerable to extinction.
A new USF study found that tour boats and swimmers routinely violate Mexico's whale shark tourism rules, even when waters are less crowded. The research, based on drone footage from 2016 and 2022, suggests that the world's busiest whale-shark destination is struggling to manage demand, putting vulnerable animals at risk.
A global survey found that nearly 66% of shark descriptors were neutral, suggesting a shift away from the menacing predator narrative. Researchers used automated statistical packages and manual approaches to analyze short descriptions of sharks, revealing positive words like 'majestic' and 'fascinating'.
A new order of marine sponges, Vilesida, has been discovered, producing unique sterols that support the hypothesis that animals evolved 100 million years earlier than previously thought. These compounds may also be used in the development of new antimicrobial and anticarcinogenic drugs.
Studies in the Tropical Eastern Pacific indicate that sharks thrive in oceanic islands' MPAs, unlike coastal areas where predatory fish are depleted. The research highlights the importance of these refuges for shark conservation.
A team of international scientists reconstructed size evolution in ancient sharks using interdisciplinary analysis. The study revealed that modern sharks experimented with enormous body sizes much earlier in their evolutionary history than previously suspected.
Two Virginia high school students found that sea anemones experience stress due to hyposalinity caused by hurricane rainfall. They also discovered a threshold of 20 parts per thousand where protective mechanisms fail, highlighting the need for conservation strategies.
Researchers observed a female Antarctic leopard seal exhibiting postmortem attentive behavior, or PAB, where she cared for her deceased pup for over 20 days. This unique phenomenon is rare in marine mammals and sheds light on the complex behaviors of these apex predators.
A meta-analysis of scientific literature reveals that pathogens are the primary driver of mass mortality events in sea urchins, with 33% of events attributed to them. Storms and extreme temperatures also play a significant role, with 25% and 24% of events respectively.
The discovery sheds light on marine ecosystems' rapid recovery and complexification after the end-Permian mass extinction. The Spitsbergen fossil deposit reveals diverse marine reptiles, including archosauromorphs and ichthyosaurs, with some species reaching 5m in length.
A new study reveals that ocean acidification is accelerating at a rate outpacing atmospheric CO2 levels, with the Northeastern Pacific Ocean experiencing rapid acidification. The research analyzed coral skeletons from the past century, showing that CO2 has been accumulating in North American waters faster than in the atmosphere.
Researchers found that regional differences in environmental conditions, rather than diet quality, drive divergent health trends in California Sea Lions. Despite similar diets, populations in Mexico are declining while those in the US are thriving.
The Art of Science competition celebrates creativity through photography and video, highlighting FAU's rise as a hub for innovation. Chelsea Bennice wins with her captivating underwater octopus image, while Gabriella Carvajal's 'Sea Turtle Beginning' showcases embryonic development, shedding light on climate change impacts.
A new method enables scientists to read the genomes of individual cells and viral particles in the environment more quickly and efficiently. The approach, known as environmental microcompartment genomics, increases throughput by an order of magnitude and provides unique insights into the diverse world of marine viruses.
A new study reveals that different prey within a single species can provide vastly different levels of nutrition for marine predators. This variation can lead to predators consuming more prey than necessary, highlighting the importance of understanding prey quality in maintaining ecosystem balance.
A soft coral's ability to stiffen its skeleton in response to danger has been studied by Penn Engineers, revealing a mechanism known as granular jamming. By compacting mineral particles and expelling water, the coral's tissues create a rigid structure that can withstand external forces.
Researchers at the University of Technology Sydney discovered that tailored lipid supplements can significantly increase coral larvae's strength, speed, and survival rate. This innovation has major implications for reef restoration projects, which aim to improve larval supply but often face low post-settlement survival rates.
A new international study reveals that nitrogen fixation occurs beneath Arctic sea ice, increasing available nitrogen for algae and potentially boosting marine life. This discovery could also impact carbon absorption in the Arctic Ocean.
Researchers describe 14 new marine invertebrate species and two genera from worldwide oceans, shedding light on deep-sea life. The study utilizes non-invasive micro-CT scanning to provide unprecedented clarity on internal tissues and soft-body parts.
Researchers tracked oceanic manta rays and found they dive to depths over 1,200 meters to gather information about their environment and navigate across the open ocean. These dives are linked with increased horizontal travel afterwards, suggesting a mental mapping function.
Researchers developed solar-powered lights to reduce sea turtle entanglement in fishing nets. The LED lights are highly effective, with 63% lower bycatch rates compared to unlit control nets.
Researchers aim to fill the knowledge gap on Antarctic marine viruses, particularly RNA viruses, to understand their ecological importance. They highlight the need for further research on viral tagging, single-cell sequencing, and studying the marginal ice zone to expand our understanding of these viruses.
Coccolithophores are microscopic ocean organisms that regulate Earth's climate by drawing carbon out of seawater, producing oxygen, and creating chalk and limestone that preserve climate history. Climate change is altering their survival and the ecosystems they support, making International Coccolithophore Day a crucial awareness campa...
Researchers will analyze genetic diversity and structure of four key sponge species to enhance resilience in restored populations. The project aims to build ecological resilience in vulnerable marine environments through a genetics-based approach.
A University of Portsmouth-led study found female crabs are significantly more sensitive to electromagnetic fields from underwater power cables than males. This could have significant ecological consequences for marine food chains and crab populations if cables are placed in the wrong spots.
A University of the Sunshine Coast researcher has documented the world's first recorded and scientifically observed three-way mating between two male and one female leopard sharks. The video provides valuable insights into the species' natural mating behavior and informs conservation strategies.
A new study by Florida Atlantic University reveals that every arm is capable of performing all action types, with front arms mainly used for exploration and back arms supporting movement. Octopuses demonstrated remarkable flexibility, showcasing complex motor control.
The MiningImpact project is investigating the environmental impacts of deep-sea mining on ocean ecosystems. Scientists are studying biodiversity, genetic connectivity, and ecosystem health to develop indicators and threshold values for harm.
A new study finds that sargassum seaweed can significantly slow down sea turtle hatchlings in Florida, increasing their risk of predation and heat exposure. Researchers found that even small amounts of sargassum can impede hatchlings' progress, with leatherbacks taking 54% longer to crawl through light sargassum.
Steve Canty has been appointed as the new director of the Smithsonian's Marine Global Earth Observatory (MarineGEO) network. As part of this role, he aims to expand how MarineGEO collaborates with communities to co-develop solutions for protecting and restoring coastal environments globally.
A team of scientists has estimated that an average cell line acquires and retains roughly 13 percent of its genes every million years through lateral gene transfer. This process enables microbes to adapt to new environments and access essential nutrients. The study provides the first quantitative analysis of gene transfer rates across ...
The Mediterranean Sea is warming at a faster rate than the open ocean, posing significant risks to marine ecosystems. The study highlights the urgent need for action to protect these unique ecosystems, which could collapse or remain functional depending on political decisions made now.
Research reveals that even thermally tolerant coral species like Stylophora pistillata can experience reduced growth and increased metabolic demand under chronic elevated baseline temperatures. However, some corals can recover when waters cool in the winter, suggesting a potential for resilience.
Researchers at OIST identified biological processes that support young clownfish adaptation to climate change and warming seas. Exposing juvenile fish to raised water temperatures showed significant changes in liver and pancreas, reducing insulin secretion and increasing oxidative phosphorylation.
A global review highlights the need for better tools to understand juvenile fish habitats, which are facing increased pressure from various factors. The study recommends incorporating metrics like growth, survival, and contribution rates to assess habitat quality.
A new ASU study identifies the most polluted areas of coastline in West Hawaiʻi and targets for remediation, providing critical data needed to mitigate sewage contamination. The research found that cesspools, septic systems, and coastal urban development are highly predictive of water contamination.
Researchers have identified a previously undocumented class of PFAS in the blubber of killer whales, accumulating in fat-rich blubber. This discovery challenges the long-held assumption that PFAS primarily bind to proteins and accumulate in liver or blood.
A new study has discovered that the microbial signature of tiny planktonic crustaceans, called copepods, reflects ocean currents and environmental gradients more accurately than freely living microbes. This finding suggests that copepod-associated microbes could serve as valuable bioindicators for detecting shifts in marine ecosystems.
The study analyzed the northbound migration of northern fur seals, revealing that they concentrate foraging activity along continental shelf-breaks and near anticyclonic eddies. The findings provide new insights into the seals' response to oceanographic conditions and highlight the importance of long-term monitoring in understanding th...