A study found enhanced pre-industrial sea-level rise of about two to three millimeters per year in Nova Scotia, Maine, and Connecticut. The rapid episodes were natural and related to the North Atlantic Oscillation and Arctic ice melt.
A study by Florida Atlantic University found that 75% of female loggerhead sea turtles on Sanibel Island mated singly and stored sufficient sperm for multiple clutches. This suggests that females may not benefit from mating with multiple males to increase opportunities for advantageous traits.
Polar bears in the Southern Beaufort Sea are abandoning their traditional summer habitats due to shrinking sea ice. As a result, they must expend more energy to find food and access whale carcasses, potentially contributing to population declines.
Research shows polar bears are spending more time on land, thinner and adult females have fewer cubs. Sea ice availability affects their body condition and reproductive success.
A survey of world's leading deep-sea scientists identified priorities for deep-sea monitoring, including large animals and habitats like deep-sea corals. The study highlights the need for a better standardized monitoring framework to prepare for future management.
Research reveals physical connectivity between southern Red Sea and Indian Ocean, highlighting need for regional marine conservation approach. Genetic patterns suggest clearer separation between northern and southern parts of sea.
Researchers found a connection between Arctic sea ice melting and altered Pacific El Niño activity. The study suggests that sea ice melt drives vertical convection in the Arctic Ocean, generating planetary waves that carry heat and momentum to the tropics.
A new study predicts 13 million US residents will be forced to relocate due to rising sea levels by 2100. Cities like Atlanta, Houston and Denver are expected to experience significant population growth, with effects on jobs, housing prices and infrastructure.
A study using quahog clam shells and climate models reveals Arctic sea ice can't 'bounce back' if climate change causes it to melt. Human activity is now massively forcing the system, exacerbating warming and sea ice loss.
Researchers at USC Viterbi School of Engineering discovered how sea stars synchronize their motion through a global directionality command and localized responses to stimuli. This decentralized nervous system can inspire more efficient robotics systems with hierarchical learning and communication.
Researchers analyzed 101 monthly stream and tide gauge records to estimate variations in relative water level in the Ganges-Brahmaputra-Meghna delta from 1968 to 2012. The study found RWL increased by approximately 3mm/year, similar to global mean sea-level increase, leading to estimated maximum land subsidence rates of 1-7mm/year.
A team of researchers created a computer model that predicts the migration patterns of sea turtle hatchlings after they leave Florida's shores. The model takes into account ocean circulation data and sea turtle nesting and stranding information to inform conservation efforts and guide policies.
A new study by Simon Fraser University reveals that sea levels in the central Indian Ocean have risen by nearly a meter over the last two centuries. The research provides new insights into historical sea level variability and its impact on coral reefs and islands.
Researchers created an extreme sea level indicator using historical data from US coastlines to understand the causes of sea level changes. The study found that different factors play a role in extreme sea levels, varying by location and time.
Researchers uncover the oldest known coastal defence system built by ancient settlers to protect against rising oceans. The ancient Tel Hreiz seawall in Israel was a temporary reprieve from sea level rise, abandoned and inundated over time.
A new study reveals that polar bears at sea, particularly pelagic bears, accumulate more pollutants due to their diet rich in marine life closer to pollutant sources. This is attributed to increased energy requirements and longer periods without ice, forcing them to feed on land-based prey or rely on fat reserves.
A new study suggests that California could more than triple its southern sea otter population by repopulating the largest estuary on the coast, the San Francisco Bay. This would be a huge boost to conservation efforts, potentially lifting the species out of endangered status.
A new study describes a 480-million-year-old fossil named Athenacrinus broweri, which helps rewrite the family tree of sea lilies. The fossil's arm structure reveals that modern sea lilies evolved from ancient ancestors with plates in their bodies similar to those found in earliest crinoid arms.
A new modeling approach can help researchers, policymakers and the public better understand how policy decisions will influence human migration as sea levels rise. The approach suggests that global policy decisions about greenhouse gas emissions and coastal policies will determine whether people need to migrate and where they may go.
A 15-year study links Arctic sea ice decline to the emergence of a deadly phocine distemper virus in northern sea otters and other marine mammals. The loss of sea ice facilitates disease transmission among species, highlighting the need for understanding PDV transmission in rapidly changing environments.
A study published in Scientific Reports found that Arctic sea ice reduction facilitates the spread of disease among marine mammals, particularly through open water routes. Widespread exposure to Phocine distemper virus (PDV) was observed in sea mammals across the North Pacific Ocean, peaking in 2003-2004 and again in 2009.
A new study finds that sea levels will rise by 20 centimeters by 2300 even if current carbon emissions pledges are met. The increase is attributed to global warming, which takes longer to respond than immediate temperature increases.
A new study warns that current Paris Agreement pledges would cause 20 cm of sea-level rise by 2300, with just five countries - China, USA, EU, India, and Russia - responsible for half the impact. To avoid this, governments must significantly scale up emission reduction efforts.
Researchers find that pyrite weathering played a significant role in ending glacial periods, releasing greenhouse gas CO2 into the atmosphere. The process helped to increase sea levels and warm the climate system, leading to rapid sea-level rise and the melting of glaciers.
Researchers found higher levels of stress hormone corticosterone in white-tailed sea eagles near paths or roads, but not on breeding success. Protection zone regulations may need adjustment to prevent negative effects on breeding performance.
The Antarctic ozone hole's decline has indirectly helped increase sea ice due to altered atmospheric and oceanic circulations. Ozone-induced changes impact sea surface temperatures and dynamics of sea ice.
A study confirms that surrogate-reared sea otters and their wild offspring account for over half of Elkhorn Slough's population growth, with similar survival rates to those reared by wild mothers. The program's success has implications for rebuilding sea otter populations in other California estuaries.
A team of UAF researchers will spend a year on board the Polarstern, studying the intersection of ocean, sea ice, and atmosphere in the Arctic. They aim to understand why the Arctic is warming faster than any other region on the planet.
Scientists have found that the blue-banded sea snake uses a vascular network in its head to absorb oxygen from the surrounding water, allowing it to stay submerged for longer periods. This unique adaptation enables the snake to thrive in tropical waters with minimal surface exposure.
Researchers found that sea lampreys' bile acids produce as sex pheromones are less varied among mature males than larvae, suggesting sexual selection plays a role in their evolution. Further research is needed to fully understand the relationship between pheromone diversity and mate preferences.
A team of scientists discovered geologic evidence in a Mallorcan cave showing sea levels were 16 meters higher than present day 4 million years ago. The findings provide insights into past global sea level rise and implications for predicting current-day rise amid a warming climate.
A USF-led team studied geological formations in a coastal cave to understand past sea level rise. They found that 3-4 million years ago, global mean sea level was 16 meters higher than present, with potential implications for current-day sea level rise.
Researchers found evidence of earlier Arctic sea-ice decline starting at the beginning of the 20th century using a new proxy from coralline algae. The study provides insight into past sea-ice variability and may help reduce uncertainties in ocean model simulations.
A study from the University of California, Davis, identifies the specific strains of Toxoplasma gondii killing southern sea otters as connected to a bobcat and domestic cats from nearby watersheds. The researchers found that infectious agents can spread from cat feces on land to the sea, harming marine wildlife.
New research reveals that reduced Arctic sea ice does not cause extreme cold winters, but rather is linked to changes in atmospheric circulation patterns. The correlation between reduced sea ice and cold winters occurs because both are driven by the same large-scale atmospheric circulation patterns.
Scientists have extended the record of Arctic sea ice thickness variability from 40 years to 110 years by using historic observations from ships' logs. This provides more context for understanding rapid changes in the Arctic Ocean and helps predict its future.
Researchers at USF have discovered a process that can control glacier calving in Greenland, which is crucial for modeling sea level rise. The team found that a 'mélange' wedge of sea ice and icebergs can 'hold the door' and prevent glaciers from calving.
Research reveals that stronger waves due to sea level rise can hamper plant re-establishment on neighboring tidal flats, slowing down or blocking recovery. Effective management of tidal flats is crucial for preserving salt marshes' resilience to wave attacks.
Researchers have documented a 22-year average sea level rise of 2.2 millimeters per year in the Arctic Ocean using radar measurements from space-based altimetry satellites. The findings reveal significant regional differences, with sea levels rising twice as fast in the Beaufort Gyre and falling along the west coast of Greenland.
A recent study has found a greater diversity of coralline algae species in kelp forests compared to sea urchin barrens, where they thrive despite the loss of sea otters. This discovery suggests that corallines may play a crucial role in maintaining these ecosystems.
Over a 40-year period, Antarctic sea ice coverage increased gradually until 2014 before declining sharply between 2014 and 2017. This trend is more pronounced than observed in the Arctic over the same time frame, with implications for climate modeling and understanding.
A new study explains why salt crystals are piling up on the Dead Sea's floor by proposing a 'salt fingering' process where tiny disturbances create channels for salt to flow down. This finding helps understand the formation of massive salt deposits found in Earth's crust, including those beneath the Mediterranean Sea.
A team of life scientists at UCLA discovered that sea otters have low genetic diversity, which could endanger their health. The researchers found evidence of potentially harmful genetic variation and mating between closely related ancestors in the sea otter genome, similar to other endangered species with small population sizes.
A new statistical analysis published in the Bulletin of the Seismological Society of America has found no correlation between deep-sea fish appearances and earthquakes in Japan. Despite long-held folklore suggesting otherwise, researchers have only identified one potentially correlated event out of 336 sightings and 221 earthquakes.
Researchers developed an algorithm using over 30 years of satellite data to isolate extreme warming events leading to documented coral bleaching in the Red Sea. The findings suggest that coral bleaching may have been greatly underestimated and indicate a emerging pattern of extreme warming events in the northern region.
A new study published by Woods Hole Oceanographic Institution found that major currents in the North Atlantic do not directly cause changes in sea levels along the New England coast. Instead, both are controlled by variability in weather patterns over the North Atlantic, such as the North Atlantic Oscillation.
A mass die-off of puffins and Crested auklets was recorded in the Bering Sea due to climate-driven food shifts, with reduced prey resources potentially leading to starvation. The study suggests that future research should investigate seabird resilience in a changing environment.
A Japanese team analyzed sediment cores from Northwestern Australia to understand past climate variability and sea-level change. The results indicate that the global ice sheet changed on a shorter timescale than previously thought, revealing short-period ice-sheet dynamics during the last ice age.
Scientists have discovered a 99-million-year-old piece of amber containing diverse coastal organisms, including sea snails, slaters, and terrestrial creatures like mites and spiders. The finding sheds light on the unique preservation process that trapped these animals in the amber.
Researchers at KAUST found that eddy-induced transport is more active in the central and northern Red Sea, influencing surface heat flux and salt dispersion. This mechanism balances fluctuations in both heat and salt, highlighting its role in the Red Sea's circulation.
A new study reveals that 75% of the Atlantic Coast from North Carolina to Central Florida will be highly vulnerable to erosion and inundation from rising tides by 2030. The region has seen a 30% increase in highly vulnerable areas since 2000, with species like loggerhead and green sea turtles facing significant threats.
Researchers from UNIGE discovered that bacteria can thrive in the Dead Sea's sediments, surviving extreme conditions by feeding on ancient corpses. This finding has significant implications for searching for life on other planets and highlights the importance of understanding how microorganisms adapt to hostile environments.
Researchers at Yale University have identified a 430 million-year-old fossil as a new species related to living sea cucumbers, named Sollasina cthulhu. The creature had 45 tentacle-like tube feet and was small, about the size of a large spider.
Researchers discovered sea snakes can dive as deep as 250 meters in the mesopelagic zone, challenging previous assumptions about their habitat. The ability to cope with diving sickness allows them to access previously unexplored ecosystems.
New study reveals extreme scale of sea-ice melting in Arctic, with only 20% of young ice reaching Transpolar Drift. This reduction affects nutrient and sediment transport, potentially impacting ecological processes and biogeochemical cycles.
Scientists decoded the genome of umi-budo, a popular Okinawan seaweed, to understand its unique shape and assist farmers in proper cultivation. The study revealed key genes controlling growth and development, potentially helping ease crop issues and address environmental concerns.
Researchers discovered a novel strategy used by microorganisms to survive in the hypersaline environment of the Dead Sea subsurface. They found that remains from extreme halophilic archaea were recycled by other microbial populations, allowing them to build carbon stocks and mitigate extreme salinity.
A new SDSU study reveals that California sheephead and spiny lobsters play a crucial role in controlling sea urchin populations in Southern California kelp forests. The research provides valuable insights into the complex predator-prey relationships in these ecosystems, which are essential for maintaining the health of kelp forests.
Researchers analyzed sea otter use of large rocks as 'anvils' to break open shells, leaving behind recognizable damage patterns and shell middens. The study suggests that sea otters may exhibit handedness, with a consistent pattern of striking the mussels against points and ridges on the rocks.
Research reveals that sea ice loss in the Arctic causes rapid warming, which will persist even after melting is complete. The study suggests that this phenomenon is more pronounced during certain periods, particularly during cloud season, due to seasonal sea-ice melting and its impact on atmospheric heat transfer.