Sea Life News

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  • Invasive shrimp-sucking parasite continues northward Pacific expansion
    on September 17, 2020 at 10:04 pm

    Researchers have identified an invasive blood-sucking parasite on mud shrimp in the waters of British Columbia's Calvert Island. The discovery represents the northern-most record of the parasite on the West Coast and is likely an indication of its ability to spread without human transport.

  • Understanding the movement patterns of free-swimming marine snails
    on September 17, 2020 at 4:28 pm

    New research looks at the swimming and sinking kinematics of nine species of warm water pteropods (sea snails) to shed light on their ecology, predator-prey interactions, and vertical distributions. By using a high-speed stereophotogrammetry system, investigators were able to focus on how the shell shape, body geometry, and body size affect their swimming behavior from a fluid mechanics perspective, while image analysis and metabarcoding related swimming behaviors to night time and daytime vertical distributions.

  • Discovery of microbes with mixed membranes sheds new light on early evolution of life
    on September 17, 2020 at 2:53 pm

    Current research suggests that more complex life-forms, including humans, evolved from a symbiosis event between bacteria and another single-celled organism known as archaea. However, evidence of a transition period in which the two organisms mixed where nowhere to be found. That is, until now. In the deep waters of the Black Sea, a team of scientists found microbes that can make membrane lipids of unexpected origin.

  • Ocean acidification puts deep-sea coral reefs at risk of collapse
    on September 17, 2020 at 2:53 pm

    Deep-sea coral reefs face challenges as changes to ocean chemistry triggered by climate change may cause their foundations to become brittle, a study suggests.

  • World's oldest animal sperm found in tiny crustaceans trapped in Myanmar amber
    on September 16, 2020 at 5:10 pm

    New research has led to the discovery of world's oldest animal sperm inside a tiny crustacean trapped in amber around 100 million years ago in Myanmar.

  • Scientists identify gene family key to unlocking vertebrate evolution
    on September 16, 2020 at 5:10 pm

    New research finds that the traits that make vertebrates distinct from invertebrates were made possible by the emergence of a new set of genes 500 million years ago, documenting an important episode in evolution where new genes played a significant role in the evolution of novel traits in vertebrates.

  • Marine animals live where ocean is most breathable, ranges may shrink with climate change
    on September 16, 2020 at 3:35 pm

    New research shows that a wide variety of marine animals -- from vertebrates to crustaceans to mollusks -- already inhabit the maximum range of breathable ocean that their physiology will allow. The findings provide a warning about climate change: Since warmer waters will harbor less oxygen, some stretches of ocean that are breathable today for a given species may not be in the future.

  • Can pumping up cold water from deep within the ocean halt coral bleaching?
    on September 16, 2020 at 3:34 pm

    Rising ocean temperatures cause marine heat waves, which place stress on living coral animals, as well as the photosynthetic algae on which they depend for energy. A new study is showing potential for the use of artificial upwelling (AU)-- or the application of cooler, deep water -- as a way to mitigate the thermal stress on corals.

  • Fish, seaweed inspire slippery surfaces for ships
    on September 15, 2020 at 4:13 pm

    Fish and seaweed secrete a layer of mucus to create a slippery surface, reducing their friction as they travel through water. A potential way to mimic this is by creating lubricant-infused surfaces covered with cavities. As the cavities are continuously filled with the lubricant, a layer is formed over the surface.

  • New shark research targets a nearly endangered species
    on September 15, 2020 at 2:59 pm

    They are some of the most iconic and unique-looking creatures in our oceans. While some may think they look a bit 'odd,' one thing researchers agree on is that little is known about hammerhead sharks. Thanks to a team of researchers, that's all changing.

  • Ocean algae get 'coup de grace' from viruses
    on September 15, 2020 at 1:01 pm

    Scientists have long believed that ocean viruses always quickly kill algae, but new research shows they live in harmony with algae and viruses provide a 'coup de grace' only when blooms of algae are already stressed and dying. The study will likely change how scientists view viral infections of algae, also known as phytoplankton - especially the impact of viruses on ecosystem processes like algal bloom formation (and decline) and the cycling of carbon and other chemicals on Earth.

  • New rules for algae species classification
    on September 14, 2020 at 8:55 pm

    A team of evolutionary biologists and ecologists has a new idea for how scientists should classify algae species.

  • Arctic transitioning to a new climate state
    on September 14, 2020 at 3:22 pm

    The fast-warming Arctic has started to transition from a predominantly frozen state into an entirely different climate with significantly less sea ice, warmer temperatures, and more rain, according to a comprehensive new study of Arctic conditions.

  • Animals' magnetic 'sixth' sense may come from bacteria
    on September 14, 2020 at 3:22 pm

    A researcher may help answer why some animals have a magnetic 'sixth' sense, such as sea turtles' ability to return to the beach where they were born. The researchers proposes that the magnetic sense comes from a symbiotic relationship with magnetotactic bacteria.

  • DNA unlocks a new understanding of coral
    on September 14, 2020 at 3:22 pm

    A new study challenges more than 200 years of coral classification. Researchers say the 'traditional' method does not accurately capture the differences between species or their evolutionary relationships. They developed a new genetic tool to help better understand and ultimately work to save coral reefs.

  • Trout don't follow the weather forecast
    on September 12, 2020 at 12:00 am

    Biologists studied the migration patterns of steelhead, a subpopulation of rainbow trout that migrates to the Pacific Ocean, where the growing fish hunt and feed until they return to their natal freshwater streams to spawn. Steelhead migration was triggered by the lengthening daylight of spring rather than factors like recent rains.

  • Shedding light on coral reefs
    on September 11, 2020 at 3:08 pm

    New research generates the largest characterization of coral reef spectral data to date. These data are an initial step in building a quantitative understanding of reef water clarity. With these data, coral reef scientists can begin to develop models to address fundamental questions about how reefs function, such as how much light reaches the various reef zones or how ecological zonation on reefs might be driven by light absorption.

  • Loss of sea otters accelerating the effects of climate change
    on September 10, 2020 at 7:03 pm

    The impacts of predator loss and climate change are combining to devastate living reefs that have defined Alaskan kelp forests for centuries, according to new research.

  • Coming up for air: Extinct sea scorpions could breathe out of water, fossil detective unveils
    on September 10, 2020 at 4:01 pm

    Through computed tomography (CT) imaging, geologists found evidence of air breathing in a 340 million-year-old sea scorpion, or eurypterid.

  • Bacteria are in key role for successful recirculating aquaculture farming
    on September 9, 2020 at 2:02 pm

    Aquaculture is one of the fastest growing food production sectors globally. Due to continuous growth, ecologically, economically and socially sustainable sites for aquaculture are already in use, which has caused a need for new fish farming techniques. Recirculating aquaculture systems, technology that recycles and saves water, has expanded in recent years. The operation and management of bioreactors has been one of the biggest issues.

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