Wound healing is important for sharks from the earliest life stages, for example, as the ‘umbilical scar’ in viviparous species heals, and throughout adulthood, when sharks can incur a range of external injuries from natural and anthropogenic sources.
Recently, researchers documented the rapid healing of the Blacktip reef sharks (Carcharhinus melanopterus) following an internal tagging procedure involving a small incision in the belly of the shark to implant the transmitter. This not only shows that sharks are healing quickly but also that they are robust to this tagging procedure which is important to know as a scientist when you work with free-living animal.
Small umbilical wounds in neonates decreased in surface area by 71% in less than a week and were barely detectable after 24 days.
Also in the study were reported two cases of survival after fin removal due to targeted shark-finning in which the basal wound of fin removal healed well and the sharks were observed alive a while after injury, swimming without their dorsal fin. However, even if they survive for un unknown time, the removal of the dorsal fin may greatly affect their daily life and in turn their fitness (and most of finned sharks may not survive).
Sharks, and probably rays too may be resilient to injuries, showing rapid healing from minor wounds and long-term survival from even major mechanical injuries. These are positive findings for elasmobranch conservation, especially considering that up to a quarter of all shark and ray species worldwide are threatened with extinction.
Despite this incredible ability, researchers encourage minimal handling time and stress when releasing sharks after fishing or by-catch, which could include cutting a line near the hook instead of repeatedly attempting to remove the hook. Anglers should also be made aware that sharks can recover from mechanical injury; therefore, sharks should be released even if the animal sustains injuries during the capture process.
Chin et al 2015. Blacktip reef sharks (Carcharhinus melanopterus) show high capacity for wound healing and recovery following injury. Conservation Physiology
Make Me Smarter
By Nicholas Hara Jan 15, 2016
We here at Tableau are very proud of how easy it is to see and understand data with Tableau. Once you get started, it’s intuitive to dive deeper by adding more and more fields, formulae, and calculations to a simple visualization—until it becomes slower and slower to render. In a world where two-second response times can lose an audience, performance is crucial. Here are some tips on making your dashboards more performant.
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Britney Spears just created the best reaction image of all time
Human Skeletons Assembled with Found Coral by Gregory Halili
Astronaut Art
Each time an astronaut flies to the International Space Station, they get the opportunity to express themselves through the photos they take of the remarkable blue sphere passing below them. It really is fascinating to observe their different styles – some seem partial to urban scenes, some wilderness. Some focus on weather, some aim their lenses at the oceans. Some aim for videos, some aim for vines, some aim for still frames.
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CRASHING OUT
In a double-displacement reaction, two sets of ionic chemical pairs switch partners. The reaction of silver nitrate with sodium chloride forms a white solid because, although both starting materials are very soluble in water, silver chloride, one of the products, is mostly insoluble. As silver chloride forms, it crashes out of solution, clouding the liquid. Meanwhile soluble NaNO3, the other product, stays dissolved. Here is the full chemical reacton:
AgNO3 (aqueous) + NaCl (aqueous) –> AgCl (solid) + NaNO3 (aqueous)
This photograph is from a series of illustrated chemical demonstrations available at beautifulchemistry.net.
Credit: Yan Liang/University of Science & Technology of China/BeautifulChemistry.net
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The Museum of Modern Art Cookbook – favorite recipes and reflections about food by Salvador Dalí, Andy Warhol, Louise Bourgeois, Willem de Kooning, and other great artists.
Fun!
Shakespeare’s Julius Caesar visualized scene by scene.
Source: ghenshaw (reddit)
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MIniature Wood Houses by Daniel Barreto
Artist on Tumblr
We’re loving these clever and subtle gif images created by 21 year old Boston, MA based illustrator Daniel Barreto. The small dwellings are carved into the nooks and crannies of trees deep in the woods. Their windows glowing with light and flickering in the dark snowy night beg the question “who built this house and how do they exactly live here. ”
© Winky Lewis
Today the ocean is blue like a galaxy in outer space where you swim through stars and black holes and the forcefields of moons, and it never ends. If I think too much about infinity, I have to close my eyes. Down here the earth is chained like a little dock to the rocks. We spin and spin and we don’t ever let go.
From: EXPLORING MOTHERHOOD IN PORTLAND, MAINE WITH PHOTOGRAPHER WINKY LEWIS
Drifting on the back roads. Turburea, Romania, 2016. Alex Muntean
Red InkStone or (Rouge InkStone / 脂砚斋) is the pseudonym of an early, mysterious commentator of the 21st-century narrative, "Life." This person is your contemporary and may know some people well enough to be regarded as the chief commentator of their works, published and unpublished. Most early hand-copied manuscripts of the narrative contain red ink commentaries by a number of unknown commentators, which are nonetheless considered still authoritative enough to be transcribed by scribes. Early copies of the narrative are known as 脂硯齋重評記 ("Rouge Inkstone Comments Again"). These versions are known as 脂本, or "Rouge Versions", in Chinese.
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