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Tag: "underwater" at biology news

UCSB scientists probe sea floor venting to gain understanding of early life on Earth

...n, and Christopher J. Ehrhardt –?studied "abyssal" underwater hills that cover a large geomorphic terrain on the ocean floor and are the most common landforms on the Earth. However, little is known about hydrothermal venting from these common features. The team describes newly discovered geological and biologi...

The secret lives of whales

...ents,?Smith explains. Whale fall habitats can form underwater stepping-stones—food archipelagos?for the dispersa... like —ohmygawd!?/p> Access to the U.S. Navy’s underwater listening systems took researchers from fixed-point observations such as ships, to synoptic views of...

Flocking together: Study shows how animal groups find their way

... roboticists at Princeton on designs for fleets of underwater vehicles. "Say you had a group of robots exploring a planet or the ocean, and each individual robot was moving around collecting information locally," he said. "By returning to the group and following the type of algorithm we propose, they could sel...

Researchers discover underwater volcano

...of California, San Diego, has discovered an active underwater volcano near the Samoan Island chain. During a re...ano growing in the summit crater of another larger underwater volcano, Vailulu'u. Researchers explored the unique biological community surrounding the eruption si...

Census of Marine Life explorers surprised by diversity, density of Arctic creatures

...t "gentle sampling," including a remotely operated underwater vehicle, a benthic camera platform, under-ice cameras and SCUBA divers, complemented by pelagic nets, benthic box cores and an ice corer. They also return with the most comprehensive and best-resolution imagery under the ice, in the water column and...

Researchers use 3-D imaging system to unveil swimming behavior of microscopic plankton

...hed Fish TV's sonar head ("transducer") on a large underwater tripod raised some 20 feet above the seafloor. The... from two meters away." The divers frequented the underwater setup to sample the animals, reorient the transducer and measure the vertical currents using various...

Discovering an ecosystem beneath a collapsed Antarctic ice shelf

...hers discovered the sunless habitat after a recent underwater video study examining a deep glacial trough in the...k and his coauthors propose that methane from deep underwater vents likely provide the energy source capable of sustaining the chemical life at the observed 850-m...

Secrets of the deep may hold key to life on other planets

...eaturesExtraordinary creatures who inhabit extreme underwater conditions are being investigated by University scientists in a three-year project. These deep-sea communities could reveal an evolutionary history different to anything else on earth and even give us clues to how life could exist onother planets. ...

'Sinkers' provide missing piece in deep-sea puzzle

... Catching bits of drifting mucus using a three-ton underwater robot was no easy feat. As Robison put it, "We collected more than a hundred of these things, and every one of them was a major challenge. About one in four attempts was successful. The patience and skill of those pilots was just amazing." Back in t...

Leading scientists rank endangered dolphins, porpoises most in need of immediate action

...ome to the surface to breathe, if they are trapped underwater in fishing nets, they die. In 2003, researchers estimated that more than 300,000 cetaceans are killed in fishing gear each year in the world's oceans. "Rather than simply identifying the species or populations at greatest risk or the geographical lo...

Canada's first embryonic stem cell lines

...ome to the surface to breathe, if they are trapped underwater in fishing nets, they die. In 2003, researchers estimated that more than 300,000 cetaceans are killed in fishing gear each year in the world's oceans. "Rather than simply identifying the species or populations at greatest risk or the geographical lo...

Novel targets found for the development of drugs to complement, or replace, statins

...ome to the surface to breathe, if they are trapped underwater in fishing nets, they die. In 2003, researchers estimated that more than 300,000 cetaceans are killed in fishing gear each year in the world's oceans. "Rather than simply identifying the species or populations at greatest risk or the geographical lo...

Virulizin granted orphan drug status in Europe

...ome to the surface to breathe, if they are trapped underwater in fishing nets, they die. In 2003, researchers estimated that more than 300,000 cetaceans are killed in fishing gear each year in the world's oceans. "Rather than simply identifying the species or populations at greatest risk or the geographical lo...

Helping in a selfish world

... Using a combination of laboratory experiments and underwater field observations in Lake Tanganyika (Zambia), Stiver and Balshine examined how the help provided to breeders varied by how related the helpers were to the breeders. "While some helpers work or care for young because they are related to the dominant...

Hidden sponges determine coral reef's nutrient cycle

... on the Caribbean island of Curaao using a special underwater camera. The films shot revealed that sponges were the most important inhabitants, followed by animals such as tube worms, tunicates and bivalves. Together they fill more than 60 percent of the cavities. Further the cavities were found to have a surfa...

NC State researchers redesign life for Mars and beyond

...ve in extreme temperatures. It grows and dwells in underwater sea volcanoes where temperatures reach more than 100 degrees Celsius, or that of boiling water. Occasionally, the organism is spewed out into near freezing deep-sea water. The NC State research, funded for two years and $400,000 by the NASA Institut...

Marine conservation organizations team up to conduct Indonesia coral reefs assessment

... observations regarding ecological condition on an underwater slate. The Reef Check survey is the only standard method used to survey the world's reefs. Initial surveys in the region conducted by Reef Check and other marine conservation organizations have revealed varying levels of reef damage, with some reefs ...

Tsunami + 1 year: Reviving exhausted fisheries should trump replacing boats, gear, experts say

... addition to Indonesia, the country closest to the underwater earthquake epicenter, the tsunami disrupted lives in many countries, including Thailand, India, Maldives and Sri Lanka. Officials estimate the total repair cost throughout the affected area at $5.8 billion, while a total of $4.4 billion has been co...

Multiple genes permit closely related fish species to mix and match their color vision

...ging specializations and subtle differences in the underwater light environment. Evolutionary comparison of pigment genes suggests that other groups of fish may use a similar strategy for shaping their color vision. ...

Overfishing may drive endangered seabird to rely upon lower quality food

...ritious foods, they need to spend more time diving underwater to catch and eat them, and have less energy to make and lay eggs. The availability of food commonly affects the reproductive success of seabirds." The researchers were able to determine the time of year that individual feathers were grown. They poin...

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