Articles tagged with Marine Life
Scientists propose searching for depleted carbon dioxide in planetary atmospheres as a sign of liquid water and potentially life on other planets. A study suggests that low carbon abundance relative to neighboring planets could indicate habitability.
A research team at Texas Tech University Health Sciences Center discovered a unique sodium pump variant in brine shrimp that enables them to thrive in high-salinity environments. This NKA variant uses more energy than common variants, allowing the animal to maintain steeper Na+ gradients.
Researchers at Kiel University discovered that porpoises and sand eels create shallow pits in the North Sea seafloor when hunting for buried sand eels. The findings have significant global implications, suggesting that scouring of sediments by vertebrates could modulate the seafloor on a global scale.
A comprehensive digital database has been created to document over 20,000 species known to produce sounds underwater, including 729 confirmed and 21,911 likely producers. This inventory can revolutionize marine science by providing valuable insights into species interactions and environmental impacts.
A modelling study published in Scientific Reports suggests that rising global temperatures could lead to an expansion of the green turtle's nesting range in the Mediterranean Sea. The authors found that sea surface temperature, salinity, and human population density most affect the suitability of a location as a nesting site.
Exposure to ocean acidification in red abalone can last across generations, affecting growth rates and reproductive potential. Scientists found that buffering the water chemistry at crucial life stages can help ease these effects for captive- and commercially raised red abalone.
The BioSPACE project aims to provide farmers, environmental agencies, and water-reliant industries with portable sensors to rapidly detect germs that threaten marine and freshwater life. The economic burden caused by waterborne diseases exceeds $3 billion in direct health care costs each year in the United States.
Researchers found that brittle stars, brainless marine creatures, can associate darkness with food and react accordingly, demonstrating classical conditioning. They retained this association even after a break from training, suggesting potential learning capabilities in these animals.
The study found that England's only resident population of bottlenose dolphins has declined to just 48 individuals due to various human impacts. The researchers call for urgent measures to protect the population and its habitats.
Rising sea temperatures in the Mediterranean may drive juvenile bluefin tuna out of their nurseries, where they'll be caught in existing fisheries, requiring adaptions to fishery methods. The research found that waters above 28 degrees Celsius will adversely impact bluefin growth.
A recent study found that half of commercial caviar products in Europe are illegal, and some don't contain any trace of sturgeon. The research analyzed DNA and isotope patterns on 149 samples of caviar and sturgeon meat, revealing widespread poaching and violation of trade laws.
A team of researchers found that host organisms control the initial bacterial colonisation, while bacteria regulate themselves later on. The study used the sea anemone Nematostella vectenis to investigate microbiome development and discovered that only the initial colonisers become well-established in adult polyps.
Researchers have developed a fully-enclosed aquaculture system that can be completely controlled, eliminating water quality and food safety concerns. The system produces nutrient-rich protein-rich 'Naked Clams' that are faster-growing than mussels and oysters, with higher Vitamin B12 levels.
A recent study by RMIT University and the Marine Mammal Foundation has revealed alarming concentrations of PFAS chemicals in Burrunan dolphins off the coast of Melbourne and Gippsland, south-east Australia. The findings are the highest reported globally, with one juvenile dolphin found to have a PFAS liver concentration of 19,500 nanog...
A team of international scientists cautions that reliance on mechanical cleanup devices to address plastic pollution is ineffective and may even harm marine life. They argue that reducing plastic production and consumption is the most cost-effective way to prevent further pollution.
Researchers from Utrecht University and Natural History Museum Maastricht studied wear marks on mosasaur teeth to understand dietary diversity. The analysis found differences in diet between smaller and larger species, including a preference for shellfish among one species and fish with strongly scaled bodies among another.
A new analysis of European Red List species reveals that 19% are at risk of extinction, including a large proportion of invertebrates. Agricultural land-use change poses a significant threat to these species, highlighting the need for conservation efforts to counter biodiversity loss.
A new study has found that a relatively ancient shark species, the smalltooth sand tiger, exhibits anatomic features suggesting regional endothermy. This discovery suggests there may be more warm-blooded sharks than previously believed, and potentially poses significant conservation implications for these species.
Researchers found 22 globally threatened elasmobranch species in Cyprus' coastal waters, with simple measures like limiting net lengths crucial for sustainability. Local authorities have banned trading of 15 species, and conservation efforts are underway to protect the marine ecosystem.
Researchers have made a breakthrough in studying species evolution by using robotic video microscopes and computer vision to measure embryo characteristics. The study found huge changes in an embryo's observable traits before and after developmental events, suggesting that measuring timings of development is just the tip of the iceberg.
Researchers have discovered a potential bottleneck in Adélie penguins' annual cycle, which could be exacerbated as the climate continues to change. The study found that seasonal Antarctic sea ice plays a crucial role in the penguins' molting periods, with low sea ice concentration signaling extended gaps in post-breeding diving activity.
Researchers compared sea stars to other deuterostomes to learn about their unique body plan, finding that genes controlling development of the ectoderm were correlated with arm patterning in echinoderms. This suggests echinoderms may have evolved by losing trunk region of bilateral ancestors.
Researchers found gene signatures associated with head development in juvenile sea stars, but expression of torso and tail genes were largely missing. The study suggests that over evolutionary time, sea stars lost their bodies to become only heads.
A new study led by FSU professor Mariana Fuentes found that shifting nesting timing may not be enough to counteract the impacts of climate change on sea turtle hatchlings. Warmer temperatures cause lower hatchling success and disrupt female turtle viability, threatening species viability.
An international research team discovered sharks have the lowest mutation rate between generations, enabling slow adaptation but also making them vulnerable to ecological changes and extinction threats
A study found that invertebrate abundance and diversity decreased near human activities like shellfish harvesting and heavy metal pollution. In contrast, environmental factors like water temperature and salinity impacted invertebrates further away from human settlements.
Researchers from the University of Plymouth discovered coral reef bleaching at depths previously thought to be resilient, highlighting the vulnerability of mesophotic coral ecosystems to thermal stress. The study suggests that climate change is causing a deepening of the thermocline, leading to increased bleaching in the deeper ocean.
A University of Otago study found biodegradable plastics can negatively impact wild fish, especially in terms of escape performance and aerobic metabolism. In contrast, bioplastics only affected maximum escape speed, highlighting the need for regulation and control of raw materials used.
A recent study by the University of Exeter and Wildlife Conservation Society found tens of thousands of endangered sharks and rays are caught annually off the Republic of the Congo. Most of these species are juveniles and vulnerable to extinction.
Researchers have uncovered the molecular mechanism behind a marine feeding strategy that could optimize biofuel production from marine brown algae. The study reveals how sea slugs and their prey co-evolved to maintain ecological balance, with potential applications in biotechnological biofuel production.
The expedition aims to study the geological system and evolution of hydrothermal ecosystems in the Red Sea. The team will use modern seafloor observation systems and instruments like the ROV Kiel 6000 to locate and map hydrothermal habitats.
The Endangered Landscapes & Seascapes Programme will support up to eight new sea restoration projects across Europe. This funding aims to create resilient ecosystems that benefit nature and people. The programme's third phase will focus on expanding large-scale restoration projects, including those focused on Europe's seas.
Researchers have documented the development of bonnethead sharks, showing how their skulls widen and distort to form a hammer-like shape. The study provides insight into the formation of this unique feature, which is thought to amplify their field of vision and ability to detect prey.
Researchers detected nine types of polymers and one type of rubber in cloud water, confirming microplastics play a key role in rapid cloud formation. The presence of hydrophilic polymers in the atmosphere could lead to significant changes in ecological balance and severe loss of biodiversity.
A new EWG study reveals that humans can serve as sentinels for understanding the impact of toxic PFAS on wildlife health. The study's findings show that over 625 species, including fish, birds, and mammals, are contaminated with PFAS, highlighting the need to tackle these persistent chemicals.
Researchers found an average of 41 microplastic particles per square meter per day settled from the atmosphere, while sediment samples contained denser particles with higher population densities. The study suggests clothing is likely the prominent source of microplastics to the Ganges River system.
Caribbean box jellyfish have demonstrated complex learning capabilities, including associative learning and memory formation, despite having only one thousand nerve cells. This discovery sheds new light on the evolutionary success of jellyfish and raises questions about the universality of advanced learning mechanisms in animals.
A newly discovered virus has been isolated from deep-sea sediment, providing insights into the diversity and evolution of viruses in extreme environments. The bacteriophage, which infects bacteria in the phylum Halomonas, is believed to be one of the most abundant life forms on the planet.
A UMass Amherst neuroscientist is mapping the brain of a sea slug to study how neurons are added to functional neural circuits, shedding light on how this process contributes to neurological conditions. The project aims to provide an unprecedented look at brain development and potentially inform human brain development.
The discovery of rare fossils in 130-million-year-old rocks reveals the earliest evidence of deep-sea fishes, dating back to the Early Cretaceous period. The findings shed light on an obscure chapter in the history of life on Earth, forcing scientists to reconsider factors that triggered vertebrate colonization of the deep sea.
Researchers developed novel bottom drifters to track ocean currents and improve the discovery of cold-stunned sea turtles. The new design revealed significant differences in stranding location trajectories, optimizing rescue operations and potentially saving more lives.
A recent study published in Molecular Ecology found widespread hybridization between two species of sea stars along the North Atlantic coast. The researchers used genomic data to analyze the genetic differences between the species and found that hybrids were thriving in areas with temperatures tolerable by both species.
Researchers developed a modeling system utilizing publicly accessible fishing data to estimate shark catch and mortality rates within eight sanctuary areas. The study found that 286,820 large sharks were caught, with 109,729 dying as a result of capture, highlighting the need for better conservation strategies.
A study published in Scientific Reports found that whale sharks exhibit disturbed behavior patterns when swimmers mimic ecotourist behavior, potentially affecting food availability and reproduction. The findings suggest that shark ecotourism operators should assess shark behavioral states before allowing tourists into the water.
A research team led by the University of Göttingen has discovered fossil spines that indicate the existence of irregular echinoids in the deep sea for at least 104 million years. The study provides insights into the past, including a mass extinction event that caused smaller species to thrive and changes in spine morphology.
Researchers from Korea Maritime and Ocean University developed a new framework for solving the energy efficiency problem in IIoTs. The proposed SWIPT-NOMA-DAS system is five times more energy efficient than existing systems, with significant improvements in performance and battery life extension.
Researchers have isolated a new strain of marine bacteria, Poriferisphaera hetertotrophicis, that grows faster in nutrient-rich media and multiplies via a budding mechanism. The bacterium releases a chronic virus, phage-ZRK32, which facilitates nitrogen metabolism and increases growth.
A historic red tide event in 2020 was caused by an exceptionally dense bloom of Lingulodinium polyedra, a plankton species that can swim and outgrow its competitors, leading to harmful algal blooms. The study validated a 50-year-old hypothesis and highlighted the exceptional swimming ability of dinoflagellates.
Researchers found that sinking culled fruit trees into the Wadden Sea boosted local marine life diversity and abundance. The study shows native biodiversity can be restored using trees as reefs.
Researchers found that deep-sea octopus gather at the Octopus Garden to mate and nest, with warmer waters accelerating egg development and reducing incubation time. The shorter brooding period boosts reproductive success and increases offspring survival rates.
A team of scientists has discovered extremely rare 160-million-year-old sea spider fossils in Southern France that are closely related to living species, providing new insights into their evolution. The findings suggest that the diversity of sea spiders had already started to form by the Jurassic period.
A new study identifies over 800 bivalve species that humans harvest and find to be more resilient to extinction due to their adaptability in various climates. The researchers highlight the need for sustainable management to preserve these populations, but also warn of potential risks if human demand exceeds their capacity.
A new study reveals that trumpetfish can conceal themselves by swimming closely behind another fish while hunting, reducing the likelihood of detection. This unique strategy, known as 'shadowing', uses a non-threatening species of fish as camouflage to approach prey.
A new study reveals how Aulacopleura, an ancient sea-dwelling trilobite, developed variable mid-section segments to tolerate dips in local oxygen levels. This adaptation allowed the species to thrive despite being preyed upon by larger predators.
A chemical process used by cooks to create flavors and aromas is believed to have helped create conditions for complex life to evolve on Earth. The Maillard reaction, also known as the browning of food, converts small molecules into larger ones that are harder for microorganisms to break down.
A study found that the silver rice rat, an endangered Florida Keys species, shifted its habitat in response to sea level rise, moving to higher ground at a rate slightly greater than the observed rise in sea level. The rats' diet and environment are highly restricted, making them sensitive to changes.
Researchers are exploring the Pacific Northwest using ROVs to locate ghost shark nesting grounds and study their developmental processes. They hope to find embryos to learn about the unique morphologies of these fish.,
Researchers found that filter-feeding basking sharks keep their core regions warmer than the water, like fast-swimming apex predators. This discovery has implications for conservation and raises ecological questions about metabolism and distribution shifts during climate change.
Two species of hairworms are missing genes responsible for producing cilia, a feature present in all other known animals. This loss likely occurred early in the evolution of the group and may impact their parasitic behavior, but its exact effects remain unclear.
A study by University of Copenhagen researchers challenges a 70-year-old assumption about the origins of life on Earth. They found that oxygen concentrations in ancient ocean samples were 5-10 times lower than today, contradicting previous theories that increased oxygen levels drove the evolution of more complex marine organisms.