Sea Life

Sea Life News -- ScienceDaily Current events articles in marine biology and science. From beached whales to coral reef bleaching, learn what is happening in today's oceans.

  • Turtle 'go-slow zone' extensions needed
    on June 23, 2017 at 2:04 pm

    Marine scientists are calling for an extension of go-slow zones in turtle habitats to reduce boat strikes on the threatened creatures. […]

  • UV-sensing protein in brain of marine annelid zooplankton
    on June 22, 2017 at 4:20 pm

    Larvae of a marine ragworm Platynereis dumerilii have been studied as a zooplankton model, and possess photoreceptor cells in the brain to regulate circadian swimming behavior. This study revealed that a photoreceptive protein in the brain photoreceptor cells is UV (ultra-violet) sensitive. Since avoidance of UV irradiation is a major cause of a large-scale daily movement of zooplankton, the UV sensor in the brain would be important for physiology and ecology of the zooplankton model. […]

  • Lessons from whale population collapse could help future species at risk
    on June 22, 2017 at 2:40 pm

    There were warning signs that populations of commercially harvested whales were heading for global collapse up to 40 years before the event, a study of historic whaling records has revealed. […]

  • Algae: The final frontier
    on June 21, 2017 at 8:59 pm

    Algae dominate the oceans that cover nearly three-quarters of our planet, and produce half of the oxygen that we breathe. And yet fewer than 10 percent of the algae have been formally described in the scientific literature, as noted in a new review. […]

  • Warming temperatures threaten sea turtles
    on June 21, 2017 at 3:39 pm

    Warmer temperatures associated with climate change may lead to higher numbers of female sea turtles and increased nest failure, suggests a new report. […]

  • Eating fish may reduce arthritis symptoms
    on June 21, 2017 at 12:28 pm

    In a recent study, individuals with rheumatoid arthritis who consumed fish twice weekly had lower disease activity (swollen/tender joint counts along with other assessments) than those who ate fish never to […]

  • Deaths of migrating wildebeests key to Serengeti's vibrant ecosystem
    on June 19, 2017 at 7:15 pm

    Wildebeest carcasses, casualties of the world's largest overland animal migration, pile up annually on the banks of the Mara River in Africa and play a crucial role in vibrant ecosystem of the Serengeti plains, a new study has found. […]

  • Holes drilled in shells point to bigger predators picking on small prey
    on June 15, 2017 at 6:27 pm

    The drill holes left in fossil shells by hunters such as snails and slugs show marine predators have grown steadily bigger and more powerful over time but stuck to picking off small prey, rather than using their added heft to pursue larger quarry, new research shows. […]

  • Distant fish relatives share looks
    on June 15, 2017 at 2:06 pm

    Scientists have found evidence that even distantly related Australian fish species have evolved to look and act like each other, which confirms a central tenet of evolutionary theory. […]

  • Eyes in the sky reveal extent of gray seal recovery
    on June 14, 2017 at 5:37 pm

    Using research drones, thermal cameras and free images from Google Earth, two studies confirm that gray seals are making a comeback off the New England and eastern Canadian coasts. The findings help confirm that seal conservation efforts are working, and that these remote eye-in-the sky technologies make it easier and safer for scientists to study migratory wildlife in remote locations and estimate their numbers accurately. […]

  • Polar bears' declining mercury levels likely due to climate-related shifts
    on June 14, 2017 at 1:18 pm

    To understand how human activities are affecting the planet, scientists often study the health of animals in the wild. Now a new study finds that the levels of mercury in some polar bears are declining. But rather than heralding a drop in mercury in the environment, the decrease could indicate how climate change has led the animals to shift foraging habits, which has affected their diets and weight. […]

  • Spying on fish love calls could help protect them from overfishing
    on June 13, 2017 at 2:19 pm

    Scientists have discovered a way to use the incredibly loud, distinctive sounds that fish make when they gather to spawn to protect them from overfishing. […]

  • Floodplain farm fields benefit juvenile salmon
    on June 12, 2017 at 9:09 pm

    Central Valley rice fields managed as floodplains during the winter can create surrogate wetland habitat for native fish, study shows. […]

  • Researchers find glass eels use internal compass to find their way home
    on June 12, 2017 at 5:55 pm

    Scientists are closer to unraveling the long-standing mystery of how tiny glass eel larvae, which begin their lives as hatchlings in the Sargasso Sea, know when and where to 'hop off' the Gulf Stream toward European coastlines to live out their adult lives in coastal estuaries. […]

  • The secrets of tooth calcium revealed
    on June 12, 2017 at 1:44 pm

    Two studies on calcium isotopes in teeth have provided new insights into both the extinction of the marine reptiles and weaning age in humans. The findings open new avenues for research in anthropology and paleontology, say researchers. […]

  • Soft shelled turtles, food in China, likely spread cholera
    on June 9, 2017 at 5:38 pm

    The pathogen, Vibrio cholerae can colonize the surfaces, as well as the intestines of soft shelled turtles. This finding is strong evidence that soft shelled turtles in China, where they are grown for human consumption, are spreading cholera. […]

  • Lost ecosystem found buried in mud of southern California coastal waters
    on June 9, 2017 at 1:12 pm

    Paleontologists investigating the sea bed off California have discovered a lost ecosystem that for thousands of years had nurtured communities of scallops and shelled marine organisms called brachiopods. They had died off by the early 20th century, replaced by the mud-dwellling burrowing clams that inhabit this seabed today. […]

  • Scientists advancing hope for reefs in the Philippines
    on June 8, 2017 at 6:55 pm

    Researchers have returned from the Philippines with new species discoveries and deeper insights into threatened coral reef ecosystems. […]

  • Extinct early whales listened like their relatives on land, fossil evidence shows
    on June 8, 2017 at 4:36 pm

    Whales show surprisingly vast differences in hearing ability. Baleen whales tune into infrasonic sounds to communicate over long distances. Toothed whales do just the opposite, relying on ultrasonic frequencies too high for humans to hear. Now researchers have fossil evidence from extinct early whale species to suggest that those differences in hearing arose only after whales evolved into the fully aquatic animals we know today. […]

  • Sea urchin protein provides insights into self-assembly of skeletal structures
    on June 8, 2017 at 2:24 am

    Calcium carbonate combined with sea urchin proteins form tiny stacks of 'bricks' that creates a structure which provides a tough, exoskeleton defense for the sea creature. Researchers studying the protein may enable the development of tunable fracture resistant materials that one day will find its use in developing lightweight 'armor' and 'sturdier' dental composites. […]

  • Natural capital: Holistic management makes ecosystems healthier, people wealthier
    on June 8, 2017 at 2:24 am

    A new study puts a price on ecosystems by recognizing the value of a 'natural capital' asset -- in this case, fish in the Baltic Sea -- and connecting it with holistic ecosystem management to calculate asset values for the interacting parts of an ecosystem. […]

  • Finding new homes won't help emperor penguins cope with climate change
    on June 7, 2017 at 7:12 pm

    Unlike other species that migrate successfully to escape the wrath of climate change, a new study shows that dispersal may help sustain global Emperor penguin populations for a limited time, but, as sea ice conditions continue to deteriorate, the 54 colonies that exist today will face devastating declines by the end of this century. […]

  • Female Steller sea lions tend to breed near their birthplace
    on June 7, 2017 at 6:13 pm

    Female Steller sea lions tend to breed at or near the rookery where they were born, according to a study. […]

  • Seeing inside coral
    on June 7, 2017 at 5:32 pm

    New technologies are making it possible to see inside coral, to examine the skeleton cores for devastation caused by humans. Scientists are racing the clock to assess the true extent of the damage before it becomes irreversible. […]

  • How can you tell deep-sea octopuses apart? Check their warts
    on June 7, 2017 at 12:55 pm

    Until now, there'd been no rigorous framework for telling apart two species of deep-sea octopuses -- they're both pink and warty. A new study, though, shows that the distribution of warts is an important means of telling the two species apart -- the octopuses from the Pacific are wartier than the ones from the Atlantic. That little piece of information could be a big help in ongoing deep-sea research. […]

  • Motor-boat noise makes fish bad parents, leading to the death of their babies
    on June 7, 2017 at 12:13 am

    The sound of motorboat engines disturbed coral reef fish so acutely it changed the behavior of parents, and stopped male fish properly guarding their young, feeding and interacting with their offspring, new research has found. […]

  • Meals on the go: The physics of baleen whales' eating habits
    on June 6, 2017 at 4:15 pm

    Researchers detail for the first time how baleen whales use crossflow filtration to separate prey from water without ever coming into contact with the baleen. […]

  • Japan's largest complete dinosaur skeleton discovered
    on June 6, 2017 at 1:50 pm

    The complete skeleton of an eight-meter-long dinosaur has been unearthed from marine deposits dating back 72 million years at Japan's northern island of Hokkaido, making it the largest dinosaur skeleton ever found in Japan. […]

  • Why do Antarctic krill stocks fluctuate?
    on June 6, 2017 at 1:50 pm

    It is only six centimeters long, but it plays a major role in the Antarctic ecosystem: the small crustacean Euphausia superba (Antarctic krill). It's one of the world's most abundant species and the central diet of a number of animals in the Southern Ocean. For a long time, scientists have been puzzled why the size of krill stocks fluctuates so widely. […]

  • Marine reserves help mitigate against climate change, say scientists
    on June 5, 2017 at 7:23 pm

    Highly protected marine reserves can help mitigate against the impacts of climate change, a study by a team of international scientists has concluded. […]