Articles tagged with Marine Life
A study published in PeerJ Life and Environment has reshaped the understanding of sea star evolution, particularly Asteriidae. The research suggests that these marine invertebrates likely originated later than previously thought, in the Late Cretaceous period.
A new study by University of Texas at Arlington researchers found that living with symbiotic algae weakens the immune system of jellyfish, making them more vulnerable to infections. This finding has important implications for coral reef conservation and human disease prevention.
Researchers at RMIT University have developed a new method for spotting plastic rubbish on beaches, which can be seen from over 600km above. The Beached Plastic Debris Index uses differences in reflected light to distinguish between sand, water, and plastics.
A research team, led by Francesco Ferretti, located signs of white sharks at four sites in the Sicilian Channel, a stronghold of the endangered species. The team used improved methods and technologies, including eDNA sampling and camera traps, to detect the presence of the sharks.
A new study reveals that a giant meteorite impact, equivalent to four Mount Everests, triggered a tsunami that mixed ocean debris and heated the atmosphere. This led to a rapid recovery of bacterial life, with iron-metabolizing bacteria flourishing in its wake.
A Chinese research team has made a significant breakthrough in understanding the origin of life by discovering abiotic organic compounds in the oceanic crust. The researchers proposed a molecular mechanism for organic condensation, revealing a crucial role of goethite in catalyzing the synthesis of abiotic carbonaceous matter.
Research reveals European flat oysters formed large reefs of living and dead shells, supporting rich biodiversity and stabilizing shorelines. Historical records show that these reefs existed along Europe's coasts from Norway to the Mediterranean, but were destroyed over a century ago due to overfishing.
Researchers discovered that sea robins' legs are covered in sensory papillae with taste receptors, allowing them to detect and uncover food. The findings reveal an ancient gene controlling leg development and sensory organ formation, shedding light on the evolution of complex traits in wild organisms.
The study reveals that sea robin legs are sensitive to both mechanical and chemical stimuli, and are covered in papillae similar to human taste buds. The research provides new insights into the evolution of this unique trait, which could offer clues about how humans developed bipedalism.
High-contrast patterns on humbug damselfish bodies serve dual purpose: camouflage when stationary and motion dazzle when moving. The fish adapt their behavior based on environment, using motion dazzle to confuse predators when feeding outside coral colonies.
Researchers discovered high levels of siderophores in the ocean's twilight zone, where iron is deficient, affecting the biological carbon pump and nutrient cycles. This study contributes to understanding climate change impacts on the ocean's ability to absorb carbon.
The study found a recent reversal of fortunes in the Adriatic Sea, with populations of marine predators and their prey plummeting and being replaced by a single species. The researchers used seafloor environments to determine interactions between species, showing a decline in biodiversity and excess nutrients.
A new set of 11 golden rules aims to minimize ocean destruction and preserve fish populations. The rules prioritize minimizing impacts on marine species, habitats, and human communities, while supporting sustainable fishing practices.
A new report by international experts urges a collective approach to tackle plastic pollution, citing over 7,000 research studies on microplastics. The need for global reduction in plastic production and emission of microplastic particles is emphasized to avoid irreversible environmental damage.
A new study of 21,000 marine animals reveals that even pristine habitats are at risk due to human activities and climate change. The research highlights the impact of cumulative human stressors on global marine fauna, emphasizing the need for targeted conservation efforts.
A new species of fish, dubbed the grumpy dwarfgoby, has been discovered in the Red Sea with a surprisingly menacing appearance. The species, which is less than 2 centimeters long, has bright red coloration that helps it blend into its natural habitat.
Research found that bacteria have specific dietary preferences for lipids, influencing their degradation rates and efficiency in the ocean's mesopelagic zone. This study highlights the importance of microbial interactions and community dynamics in controlling global carbon fluxes.
A new study reveals a deep-sea isopod that consumes Sargassum algae sinking from the ocean's surface, showing how closely connected the surface and deep oceans are. The isopod uses specialized adaptations to feed on this sunken source of nutrients.
Researchers discovered a bacterial parasite that infects the nuclei of deep-sea mussels, reproducing to over 80,000 cells while keeping its host alive. The parasite produces proteins that suppress apoptosis, an 'arms race' with the host cell, and acquires nutrients from host components.
A new study reveals that breeding queen conch populations within a protected marine reserve in The Bahamas sustain populations beyond the borders of the reserve. The research identifies where additional protections could help ensure the survival of future generations.
The WPI team will develop an inexpensive test kit that can quickly identify vulnerable species and track illegal wildlife trade on social networks. The project aims to disrupt the multi-billion-dollar industry by providing law enforcement with real-time results and long-term trends.
Researchers have identified multipotent stem cells in sea anemones that are regulated by highly conserved genes, which could provide insights into human aging. These stem cells express genes like nanos and piwi, essential for germ cell formation, and may hold the key to understanding the potential immortality of sea anemones.
A recent study by UT Arlington scientist Nathan D. Brown shows Alaskan land is eroding faster than it can be replaced due to climate change. The team mapped and dated floodplain deposits, determining permafrost extent, to model how permafrost formation varies with air temperature.
Scientists equipped Australian sea lions with cameras and analyzed the footage to identify six benthic habitats in southern Australia. The study used machine learning models to predict large habitat areas across the continental shelf, contributing to a better understanding of the region's seabed diversity.
A new platform, Ocean Species Discoveries, facilitates rapid taxonomic description of marine invertebrate species, reducing decade-long delays. This initiative, coordinated by the Senckenberg Ocean Species Alliance, aims to discover, protect, and raise awareness of threatened marine species before they become extinct.
Researchers from Tokyo Institute of Technology found that shark skin's denticles reduce drag at a wide range of speeds, allowing sharks to cruise efficiently and hunt effectively. The study suggests that extinct giant megalodons may have similar swimming speeds to white sharks.
Researchers at the University of Tokyo have discovered a new species of starfish off the coast of Japan, shedding light on the country's marine biodiversity. The newly named Paragonaster hoeimaruae is a distinctive red and beige color with five arms and spans over 10 centimeters.
Researchers have discovered a method to identify shark species using medical gauze from first-aid kits after bite incidents. This approach can provide accurate and timely information on species, aiding prevention measures and reducing incidents.
Researchers explored ancient interactions between life and the environment during the Phanerozoic Eon, a period of significant habitability improvements. They found that ocean algae played a crucial role in reducing atmospheric carbon dioxide levels and increasing oxygen levels, allowing for the evolution of more complex life forms.
A new study reveals a previously unknown galeommatoidean bivalve species, Brachiomya ducentiunus, found attached to sea urchins in False Bay's kelp forest. The discovery expands our understanding of marine biodiversity and ecological interactions.
A team of Harvard researchers has discovered a new species of chordate, Nuucichthys rhynchocephalus, in the Drumian Marjum Formation of the American Great Basin. The fossil provides valuable insights into early vertebrate evolution and biodiversity, as it is one of only four species documenting this stage of vertebrate lineage.
A study published in Global Change Biology found severe biodiversity decline in the Atacama Trench from 1970 to 1985, coinciding with an El Niño event and extensive fishing efforts. The researchers also discovered a direct impact of sea surface temperature on marine life composition over time.
Researchers reveal Odaraia alata's intricate system of spines that could capture prey, and its pair of large appendages with grasping edges indicative of mandibles. The study provides new insights into the evolution and ecology of early mandibulates in marine ecosystems.
Researchers at Boston College found male dragonfish have evolved larger eyes to detect females who produce less light, closing a bioluminescent detection gap. This is the second known case of sexually dimorphic eye-size in fishes and highlights the unique adaptations of deep-sea species.
Rensselaer researcher Kevin Rose links aquatic deoxygenation with broader Earth system stability. Global warming and pollutants disrupt biogeochemical processes in aquatic ecosystems, affecting freshwater and marine organisms. Critical thresholds of aquatic deoxygenation will impact several Planetary Boundaries.
Researchers found that herring gull chicks fed a marine diet preferred fish over urban foods, indicating they may prioritize seafood for nutrition. The study suggests that early life dietary influences do not impact adult fish preferences in herring gulls.
A UC Riverside paper has opened the door to understanding more about life's beginnings and early evolution. The study weaves together data from ancient rocks, genomic studies of modern organisms, and recent breakthroughs about the evolving chemistry of the early oceans, atmosphere, and continents.
Researchers discovered that Desertas Petrels follow hurricanes to take advantage of enhanced foraging conditions, where prey accumulates closer to the surface. The birds reduce their flight time and avoid injury by using the storm's wakes as a wind tunnel, providing them with an easy meal.
A UCF biologist has compiled a database of animal DNA to study the presence of magnetic bacteria, which may aid in navigation and conservation. The database contains hundreds of millions of genetic sequences showing the presence of various types of magnetic bacteria.
New research reveals oyster sanctuaries contain more abundant populations of oysters and other animal life, despite the presence of parasites. The study found that these areas support higher oyster densities and habitat quality than nearby harvest sites.
A new study reveals the crucial roles of fish and invertebrates in coral reef health, including nutrient boosting and predator protection. However, parasitic snails and destructive crab species also pose a threat to these vital ecosystems.
New research reveals offshore windfarm electromagnetic fields have minimal impact on shark growth and survival, but ongoing studies aim to improve understanding of effects on marine species. The study focused on small-spotted catshark development under control and windfarm-impacted conditions using AC or DC currents.
The study reveals that the electric blue spots of the bluespotted ribbontail ray are produced by unique skin cells with a stable 3D arrangement of nanoscale spheres containing reflecting nanocrystals. The team believes this colouration provides camouflage benefits to the stingrays, allowing them to blend with their surroundings.
Researchers have discovered that the Greenland shark's metabolism remains unaltered over time, suggesting a key role in its exceptional longevity of at least 270 years. The study also found that metabolic enzymes were more active at higher temperatures, challenging previous assumptions about the species' adaptation to cold environments.
Research shows that ocean warming and acidification could lead to catastrophic shark embryo survival decline by 2100. Monthly temperature variation plays a significant role in mortality rates.
A new Oregon State University study found that young Pacific cod in near shore safe havens were severely affected by recent marine heat waves in the Gulf of Alaska. The researchers estimated that only the largest 15-25% of the island's cod population survived, leading to significant changes in abundance, growth rates and diet.
Deep-sea organisms have developed biophysical adaptations to survive harsh conditions, including unique lipid structures. Researchers found that ctenophores have exaggerated cone-shaped lipids that help them withstand intense pressure.
Researchers found a link between ancient ocean oxygen depletion and the massive extinction of marine species during the Jurassic Period. The study provides insights into how human-made carbon emissions may lead to similar extinctions in the future.
The Deepwater Horizon oil spill released nearly 5 million barrels of crude oil and hydrocarbon gases, affecting an area of 1,100 square miles, nearly nine times larger than earlier studies. Biodiversity loss among harpacticoid copepods declined dramatically due to the spill.
A new study found that magnesium levels in sandhoppers increase during cold weather, slowing their activity. In deeper sleep, magnesium levels can more than double, putting the sandhopper into a torpid state and allowing it to conserve energy.
Researchers found sharks maintained high levels of functional diversity for most of the Cenozoic era before declining over the last 10 million years. The decline is attributed to the loss of ecologically unique species, including the megalodon, a key apex predator.
A new study by University of East Anglia and Ocean University of China found that ocean algae play a significant role in producing DMSP, a compound that helps regulate the Earth's climate. The discovery could change our understanding of how these tiny marine organisms impact the planet.
Researchers have established Holothuria tubulosa as a new experimental model organism for studying evolutionary development in echinoderms. The study has developed a protocol to efficiently produce embryonic cultures of the sea cucumber, allowing for the use of genetic manipulations to dissect development.
A new method developed by researchers at Florida Atlantic University and the Smithsonian Environmental Research Center improves the accuracy of acoustic tracking in marine animals. The method uses a movement model to reconstruct animal tracks, even in regions with uneven receiver coverage.
Researchers have solved the mystery of shipworms' ability to digest lignin, a tough wood substance. A population of symbiotic microbes in the typhlosole sub-organ produces enzymes that break down lignin, with potential practical applications in biotech and significant impacts on climate change and human health.
Research reveals a correlation between warm ocean conditions and salmon movement into the Arctic. The study found that when both gates of ice-free water are open, salmon can expand their range in Canadian waters.
Researchers studied bacterial evolution in lucinid clams surrounding the Isthmus of Panama, where Caribbean and Pacific environments differ significantly. The study found that symbiotic bacteria adapted to these changes by acquiring nitrogen fixation genes and developing unique metabolic capabilities.
Researchers found that sharks adapted by elongating their pectoral fins in response to warmer ocean temperatures, making movements more efficient. This evolution allowed them to thrive in the open ocean despite extreme heat.
A new scientific model provides a global look at the activities of clams, worms and other invertebrate animals that burrow at the bottom of the ocean. The study found that environmental factors such as seawater depth, nutrient levels and sediment composition shape bioturbation patterns and marine ecosystems worldwide.
Researchers used pyrite to study the relationship between sediment mixing and oxygen levels in ancient oceans. They found that small amounts of sediment mixing can expose buried minerals to enough oxygen to start oxygen buildup. This challenges conventional wisdom about the role of oxygen in oxygen accumulation.