A study by University of Queensland scientists reveals that only 13% of the ocean can be classified as wilderness, leaving it vulnerable to loss. Marine areas devoid of intense human impacts are being protected, but most remaining wilderness is located in remote regions and is unprotected.
A new study led by Francisco Ramírez from the University of Barcelona identifies key areas to protect 20% of sea bird populations in Patagonia. The research uses a multidisciplinary approach to define marine areas of interest in conservation, considering ocean currents and coastal ecosystems.
International research found many marine protected areas inefficiently located and costly, failing to meet global targets. The study suggests a more strategic approach could reduce costs and improve conservation outcomes.
Researchers from the University of South Florida have published a seven-year study on the impact of the Deepwater Horizon oil spill on marine life in the Gulf of Mexico. The study found that fish populations have recovered significantly since the disaster, with some species like the red snapper and southern hake showing notable declines.
A massive study of tropical coral reefs found that marine reserves near heavily populated areas have only a quarter of the fish and are less likely to have top predators. Marine reserves with medium to high human pressure can still have five times more fish than openly fished reefs, offering a conservation benefit.
The SYMBIOSIS system integrates acoustic and optical technologies to monitor schools of fish in deep waters, providing reliable information on fish stocks and their movements. The system will inform fishing policy development and enhance protection of the marine environment.
A massive study of 1,800 tropical coral reefs found that marine reserves near human populations struggle to protect fish stocks. However, these reserves still offer significant benefits for key fisheries species and top predators like sharks. The study highlights the importance of targeted conservation strategies in different locations.
A Europe-wide study found that over 95% of people reported seeing litter when visiting the coast, leading to higher concern and willingness to change behavior. The primary causes of marine litter were attributed to plastic use, human behavior, and single-use plastics.
A single transnational corporation has registered 47% of marine genetic sequences, while entities in only 10 countries account for 98% of patents. The study highlights the need for a legal framework to regulate access and use of marine genetic resources beyond national jurisdiction.
Marine organisms easily ingest nanoplastics, which accumulate in their bodies over time, threatening food safety. Nanoplastics can transfer up the food chain, affecting human health, as shown in a recent study using acorn barnacles.
A team of researchers led by Maya Elrick found that a global marine anoxic event occurred during the Late Ordovician Mass Extinction, which lasted for at least 1 million years and coincided with the extinction of 85% of marine life. The study suggests that low oxygen concentrations in the ocean were a major driver of the mass extinction.
A new study of marine fossils from Antarctica, Australia, New Zealand and South America reveals that sea lilies remained in shallow waters until around 33 million years ago. The results provide conclusive evidence that this change happened at different times in different parts of the globe.
Researchers at FAU have discovered that marine animals have been migrating for millions of years in response to changes in temperature. Coral, molluscs, and sponges have followed their preferred cold and warm zones for half a billion years, with isotherms shifting towards the poles or equator as temperatures rise or fall.
Scientists documented dozens of dolphins and pilot whales, as well as rare Sowerby's beaked whales, endangered sperm whales, and giant ocean sunfish. The aerial survey revealed an incredible abundance of marine life in the Northeast Canyons and Seamounts Marine National Monument.
Researchers at UCLA have successfully transferred a memory from one marine snail to another by injecting RNA, creating an artificial memory. The study could lead to new ways to lessen the trauma of painful memories and restore lost ones.
Researchers compiled a massive dataset of movement data for diverse marine megafauna, including whales, turtles, sharks, and birds. The study found that species-specific movement patterns are influenced by habitat, with open-ocean animals moving in straighter lines and coastal animals exhibiting more erratic behavior.
A new study predicts that climate change will transform marine ecosystems in Marine Protected Areas, leading to extinctions and loss of biodiversity. By 2100, warming temperatures could make these areas uninhabitable for most species, with the Arctic and Antarctic regions expected to warm especially quickly.
Researchers found that humans generate significant underwater noise when swimming, kayaking, or scuba diving, affecting marine life. Different activities produce distinct sounds, with some being loud enough for animals to detect.
Researchers at HKU and Chinese Research Academy of Environmental Sciences have developed a novel scientific method to derive water quality criteria (WQC) of metals for protecting different marine ecosystems. The new approach considers variable temperature and salinity regimes, improving protection for tropical marine organisms.
A thin smart patch called Marine Skin can track an animal's movement and diving behavior in real-time, while also monitoring the health of the surrounding marine environment. The patch uses stretchable silicone elastomers to withstand high pressures and can be attached to a wide range of sea creatures.
A new research project in the UK aims to study the impact of tyres and clothing on the marine environment. The project will explore how tiny plastic particles from these sources enter waterways and oceans, affecting marine life.
Researchers find that many invertebrates, including corals and molluscs, can produce omega-3 fatty acids through enzymes called desaturases. This breakthrough challenges the long-held principle that marine microbes are responsible for primary production of omega-3.
A new study reveals that marine mammals' unusual lung architecture allows them to avoid the bends by creating a ventilation-perfusion mismatch. This adaptation helps to minimize nitrogen uptake and reduce the risk of decompression sickness. However, excessive stress caused by human-made sound can disrupt this system.
A UCLA-led team of biologists reports that a six-mile-wide asteroid crash 66 million years ago created an enormous evolutionary void for marine fish to diversify. Today's rich biodiversity among marine fish shows the fingerprints of this mass extinction, with six major acanthomorph groups producing almost all marine fish diversity.
A new study reveals that extreme climate variability over the last century has synchronized ecosystem behavior on the West Coast, increasing risks of extinction for marine and terrestrial organisms. This synchrony is linked to changes in winter climate patterns, such as the North Pacific High, which have become more variable over time.
Researchers found a 54% increase in marine heatwave days every year, with significant impacts on ecosystems, biodiversity, fisheries, tourism, and aquaculture. The study also revealed an acceleration of the trend in marine heatwaves since 1982, with profound economic consequences.
Researchers at UEA are using silent marine robots to record underwater sounds, providing valuable information on sea-surface wind speed and monitoring storms. The robots can also eavesdrop on marine life, such as whales and dolphins, and detect human activities like marine traffic and seismic surveys.
Seagrass meadows in Indonesia are under threat due to environmental degradation, with up to 90% of meadows showing extensive damage. Community-led conservation action and replanting initiatives have shown promise in mitigating the problem.
A study by the University of Plymouth reveals that exposure to moderate hypoxia can have different effects on metabolic performance in animals bred under chronic hypoxic conditions. This could result in underestimated vulnerability of species, leading to reduced biodiversity.
Ocean conditions off the US West Coast are returning to average after a marine heat wave, but salmon catches remain depressed. Feeding conditions have improved for sea lions and seabirds, while plankton species have shifted back towards fat-rich, cool-water species beneficial for fish growth.
A study by a team of economists and marine experts found that protecting marine coastlines contributes $179 million to the state's economy, more than finfish landings and whale-watching. Coastal conservation groups support activities such as beach cleanup and education campaigns.
Marine reserves have been shown to improve the growth rate, body size, and reproductive success of fish species. By providing a safe haven for fish to mature and reproduce, these protected areas help replenish depleted stocks and promote more sustainable fishing practices.
A study mapped global movements of whales, sharks, sea birds, and polar bears to understand ocean travel patterns. Despite size differences, marine animals move similarly through the ocean.
Marine animals such as seals, whales, sharks, turtles, seabirds, and others exhibit similar movement patterns globally, despite differences in geography, phylogeny, or travel mode. In coastal areas, tracking data show complex search behavior, while open ocean movements are more predictable.
Researchers at the University of East Anglia have discovered a key gene responsible for synthesizing dimethylsulfoniopropionate (DMSP), an important nutrient in marine environments. The discovery could allow scientists to better predict the impact of climate change on DMSP production and its effects on the global sulfur cycle.
Research reveals that systematic education tools can significantly improve understanding and willingness to address marine litter. Educators and students who participated in an online project showed high intentions of implementing changes and reported increased concern about the issue.
A new study published in Frontiers found microplastics in the stomachs of nearly three out of four mesopelagic fish caught in the Northwest Atlantic, with 73% ingesting pollutants. This high ingestion rate has significant consequences for marine ecosystems and biogeochemical cycling.
A University of Guelph study found that omega-3s from fish are eight times more effective at inhibiting tumour development and growth compared to plant-based options. The research suggests that marine-derived omega-3s can significantly reduce breast cancer risk, particularly in aggressive forms.
A UCI study found that marine plants and seaweeds decrease acidity through photosynthesis, suggesting conservation efforts could preserve shellfish habitats. The research, spanning 1,000 miles of coastline, highlights the importance of marine life in driving local pH conditions.
Researchers used hydroacoustics to compare fish abundance within and outside Mexico's Cabo Pulmo National Park, finding a four-fold increase in protected areas. The study demonstrates a cost-effective method for assessing fish populations and highlights the importance of marine protected areas for maintaining sustainable fisheries.
Zooplankton respond to natural light cycles in the upper water column, but artificial light from research vessels disrupts this pattern. The researchers found that zooplankton migrated deeper into the water when exposed to artificial light.
A new international study found that plankton's body size and ocean currents are crucial in determining their dispersal in the ocean. The larger the plankton, the smaller the connection between distant communities. Climate change is rapidly warming marine waters, making it essential to understand how this affects biological communities.
A recent study found that 70% of respondents believe the marine environment is under threat from human activities, with pollution and fishing identified as top concerns. The public also strongly supports protection of marine areas through MPAs, but rules governing these areas vary widely.
Scientists discovered fossil evidence of deep-sea marine life burrowing up to eight meters below the seabed, which is four times deeper than previously thought. The findings suggest that deep-sea burrowing marine life may be more abundant than previously considered.
A new study by University of Adelaide scientists demonstrates how climate change drives the collapse of marine food webs, potentially leading to decreased food availability for top predators and negative impacts on marine species.
A new study demonstrates how climate change can drive the collapse of marine food webs by altering trophic flows and promoting cyanobacterial proliferation. This can lead to reduced food availability for top predators, negatively impacting marine species diversity and fisheries productivity.
A global survey found that 91% of entangled marine turtles were dead, with serious wounds from entanglement and maiming. The study highlights the risk of plastic pollution to marine turtles, particularly young hatchlings and juveniles.
A study by University of Plymouth researchers shows that marine organisms can break down a single plastic carrier bag into 1.75 million microscopic fragments. The presence of a biofilm accelerates the process, suggesting that marine life may be contributing to the spread of microplastics.
Researchers found that simulated anthropogenic noise exposure physiologically impacted blue crabs and lobsters, causing increased stress responses. The study also revealed behavioral impacts, including aggressive behaviors and reduced feeding, highlighting the need for environmental permitting in coastal areas.
A €1.9 million research project will explore the complex roles played by marine planktonic fungi, known as mycoplankton, in the cycling of carbon in the sea. The MYCO-CARB project will use innovative approaches to assess active mycoplankton diversity and abundance across various ecosystems.
The recovery of killer whales, sea lions, and harbor seals on the West Coast has led to a significant increase in their consumption of chinook salmon. This shift may now exceed the combined harvest by commercial and recreational fisheries, creating complex tradeoffs for conservation efforts.
A new study published in Marine Policy predicts that Pacific Island nations will lose 50 to 80 percent of marine species in their waters by the end of the 21st century. Climate change is expected to make these waters warmer, less oxygenated, and more acidic, leading to widespread extinctions.
Researchers found that competition and herbivory provide resilience against invasive species in certain marine protected areas. The study suggests that healthy kelp forests, with high levels of native algae, outcompete invasive species like Sargassum horneri.
University of Miami Professor Daniel Benetti has been awarded a $967,000 grant from NOAA to develop hatchery technology for three economically important marine fish species. The project aims to create an affordable supply of seed for commercial producers, relieving pressure on wild stocks without negative economic impacts.
Research finds that restored, protected reefs have significantly higher oyster densities and larval output compared to harvested reefs. Additionally, restored harvested reefs show increased larval recruitment, implying a valuable spillover effect from reserves to surrounding areas.
The CLAIM project focuses on developing new strategies for prevention and in-situ management of marine litter, particularly in the Mediterranean and Baltic Sea. The project will test innovative technologies such as automated cleaning devices, photocatalytic devices, and thermal treatment devices to reduce plastic debris in these areas.
A study published in Palaeontology found that the Late Triassic mass extinction did not fundamentally alter marine ecosystem function. Despite significant species loss, marine ecosystems continued to operate with reduced diversity among remaining species.
The encyclopedia is a valuable resource for understanding the structure, processes, and genesis of the marine geosphere, essential for addressing global challenges. It presents an interdisciplinary synopsis of marine geosciences, incorporating multiple disciplines, and is regularly updated as a 'living' eReference work.
Research reveals that climate shifts can significantly alter the length of marine food chains in Southern California. The study found that extreme environmental conditions, such as El Niño events, shortened the food chain by reducing population sizes and diversity. This change indicates a decline in ecosystem resilience.
Scientists discovered that plastic marine debris was transporting non-native species from Japan to North America and Hawaii after the 2011 tsunami. This phenomenon suggests a significant increase in the role of marine debris as a vector for invasive species due to climate change and coastal urbanization.