List of All Articles with Tag 'd'

Scientists have got to the bottom of a 5-year mystery after finally identifying a tiny sea creature captured on camera in 2018. It is the latest in a series of oceanic discoveries and experts recently observed “zombie worms” devour an alligator in an incredible experiment. For the tiny creature, the baffling question of its identity took a team of zoologists and parasitic worm specialists to solve after the small creature was pictured by an underwater photographer in 2018 off the coast of Okinawa in Japan. After photographer Ryo Minemizu captured the image, he shared it on social media asking the hive mind if they knew what the creature was, but everyone was left stumped. Minemizu was determined not to give up and instead went back to the area and was able to capture another ladybird-sized creature that was the same, or very similar, to the original one he had come across. The research team that was interested in identifying the sea creature approached him and Minemizu sent them the sample to research. Your browser does not support the video tag. Current Biology (2023) The team’s results were published in the Current Biology journal putting an end to the 5-year long mystery baffling experts. In a fascinating twist, the team found that the sample was not one, but two creatures that were clinging tightly to one another. Both were identified as types of cercariae parasitic larvae worms, with experts dubbing one as the “sailor” and the other as a “passenger” thanks to how they behave when they are connected. Passengers were much smaller than the sailors and when they were bonded together, they formed a flat-topped hemisphere shape. They squeeze their bodies together with heads facing the inside of the sphere, meanwhile, their tails latch onto one another. Experts believe the two individual creatures have created a colonial organism that suits both of their needs and according to the study's authors, “represents the first case of labor division in digenean larvae”. Sign up to our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

In late September, scientists at NASA and around the world eagerly awaited the arrival of the OSIRIS-REx capsule containing a sample of the asteroid Bennu. The capsule safely landed on Earth on Sunday 24 September in a Utah desert containing a sample of the asteroid Bennu – categorised as one of the two “most hazardous known asteroids”. When the capsule was first opened, it sparked audible gasps from scientists. Since its arrival, NASA has kept its cards fairly close to its chest but a new blog post from the space agency suggests that progress is going slowly for the “best reason” as there is more sample material than they had anticipated. They explained: “The abundance of material found when the science canister lid was removed earlier this week has meant that the process of disassembling the TAGSAM (Touch-and-Go Sample Acquisition Mechanism) head – which holds the bulk of material from the asteroid – is off to a methodical start.” The OSIRIS-REx’s mission took 7 years to complete, with the sample currently being analysed by NASA taken three years ago before making its way down to Earth. Imagery from the moment the sample was taken confirmed to scientists that there would be asteroid material where they found it, but the quantity of dark particles were far more than they had anticipated. “The very best ‘problem’ to have is that there is so much material, it’s taking longer than we expected to collect it,” said deputy OSIRIS-REx curation lead Christopher Snead of NASA’s Johnson Space Center. “There’s a lot of abundant material outside the TAGSAM head that’s interesting in its own right. It’s really spectacular to have all that material there.” In the coming weeks, experts will continue to work through the particles and begin the complex process of carefully disassembling the TAGSAM to reach the bulk of the Bennu sample inside. Sign up to our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

A warning to readers who don’t have a fear of the deep ocean: this story might soon change that. Back in 2019, a group of researchers who wanted to stir excitement down in the murky recesses of the sea conducted a unique experiment. The team, from the Louisiana Universities Marine Consortium (LUMCON), dropped three dead alligators 6,560 feet (2,000 metres) down into the Gulf of Mexico to see how deep-dwelling creatures would react to an uncommon food source. Initially, the scientists thought that the tough hide of the reptiles would put scavengers off, because it would make it hard for them to reach the more desirable soft flesh. However, this swiftly proved to be far from the case. Within a day, nine large isopods (Bathynomus giganteus) were observed feasting on the first carcass, eventually penetrating its hide and eating their meal from the inside out – imagine a crew of foot-long, pink woodlice crawling all over a gator and you get the picture. The second croc, dropped around 100km away, was almost totally devoured in just 51 days – leaving behind nothing more than its skull, spine, and the rope and weight that were used to anchor it to the sea floor. The scant leftovers became a source of great excitement to the researchers when they noticed it had been targeted by a brand new species of bone-eating worm. They concluded that it appeared to be a member of the Osedax family – commonly known as "zombie worms" because they suck away at, and live off, the bones of the dead – which had never been seen around Mexico before. Testing revealed that its nearest identifiable relatives are native to Antarctica and California, therefore making it an “undescribed species”. The investigators wrote in a paper about their discovery, which was published in the journal PLOS, that the creature “will be named in due course”. So, what happened to the third alligator? Well, that part is a mystery, because within eight days of its drop-off at its 1,996-metre-deep observation spot, it had disappeared. The researchers noted that although the body had vanished, the 20.4kg anchor, shackle and rope used to weigh the animal down were found 8.3 metres away – suggesting they had been “dragged” there. The experts concluded that a “large scavenger” had most likely snapped up the reptile. And given the depth at which it had been left, and the “implied body size necessary to both consume a moderately-sized alligator and move a large weight” it was probably a large shark. Clearly, whatever the beast was, it didn’t feel like sharing its dinner with a bunch of greedy worms. Sign up for our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

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A stark new discovery has revealed that cannibalism was a common practice in Europe to commemorate the dead 15,000 years ago. Research from London’s Natural History Museum (NHM) found human remains at a famed Paleolithic site in Cheddar Gorge that appeared to have bite marks across 100 of the bones. Scientists believe this is sufficient evidence of cannibalism in the Magdalenian group. "We interpret the archaeological evidence that cannibalism was practised on multiple occasions across northwest Europe over a short period of time as an indication that such behaviour was part of a funerary behaviour among Magdalenian groups, and not simply practised out of necessity," Dr Silvia Bello, paleoanthropologist and principal researcher said in a statement. Postdoctoral researcher William Marsh went on to say that the study contextualised the area by reviewing all sites "attributed to the Magdalenian culture." "During the terminal time period of the Palaeolithic, you actually see a turnover in both genetic ancestry and funerary behaviour, indicative of population replacement as Epigravettian groups migrated northwards," he said, as per IFL Science. "We believe that the change in funerary behaviour identified here is an example of demic diffusion where essentially one population comes in and replaces another population and that brings about a change in behaviour." Fast forward to 2023, and now people are having their bodies frozen in hopes they can "wake up" in the future. Cryonics "is the practice of preserving humans and animals at cryogenic temperatures in the hope that future science can restore them to a healthy living condition as well as rejuvenate them," according to the National Library of Medicine. "At present cryonics can only be performed after pronouncement of legal death of the cryonics subject." Sign up for our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

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