scientist shark

Concept: one of those “hyper-intelligent shark terrorises scientists at offshore research facility” movies (can you believe that’s an actual genre?), except partway through the movie it turns out that the facility’s director is secretly the leader of an apocalypse cult and is trying to summon Cthulhu, and the shark is trying to stop him. In the end, the interns team up with the shark to bring down the cult and its master.

smithsonianmag.com
Canadian Scientists Explain Exactly How Their Government Silenced Science
It wasn’t just climate research. Rock snot, sharks and polar bears: All were off-limits during the Harper administration
By Joshua Rapp Learn

“A survivor’s guide to being a muzzled scientist.”  

Get a personal e-mail address, start your own blog and make sure there are multiple copies of your datasets. “Get anonymous, get online. Let people know what’s going on,“ Rennie says. “Folks that are in academia, that have tenure, that have a bit more job security and have more of an ability to speak their mind can help those in the public service that are challenged with these situations.”

“Disservice is too mild a word” to describe the effect of this muzzling, says Steven Campana, a shark scientist who spent 32 years working for Canada’s Department of Fisheries and Oceans:

 “It’s a cheat for the taxpaying public because it’s the taxpaying public that is funding this government research. When that research leads to very positive things, or even if it’s negative, the people that paid for it deserve to hear about it.”

Source: Smithsonian Magazine

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As a scientist who studies blacktip sharks, I feel like it is my duty to inform others about this common case of misidentification.

The first picture is of one of my sharks, and the second picture is another species within its genus for which my shark is mistaken. Many people do not know that the blacktip (Carcharhinus limbatus) and blacktip reef shark (Carcharhinus melanopterus) are two completely different species. First, the blacktip reef is found in the Indian and Pacific oceans, and they have limited ranges as they stay extremely close to their sites for many years. Conversely, the blacktip is worldwide along coastlines and migrates seasonally. As for visual differences, the black fin markings on the blacktip reef are much more prominant. The blacktips nearly always lack black tips on their anal fins, and their black markings fade significantly with age. Another notable distinction is coloring, as blacktips tend to have a gray/bronze coloring while blacktips are a paler, cream based color. A behavioral difference is that blacktips have been known to jump out of the water like a spinner shark (Carcharhinus brevipinna) in the presence of prey or when caught on a line (I have witnessed this first-hand when I caught my first juvenile). Genetically, the blacktip is actually thought to be most closely related to the blacknose (Carcharhinus acronotus) based on DNA studies. However, resolution of phylogenies for both species is far from happening.

There are two lesser known species (Australian blacktip and smoothtooth blacktip) that are not as easily distinguished. The Australian blacktip (Carcharhinus tilstoni) looks exactly like the blacktip and was only found to be a separate species due to genetic analysis and vertebral differences; it is found along the northern half of Australia’s coastline. The smoothtooth blacktip (Carcharhinus leiodon) looks like the blacktip reef shark and is exclusively found along the Arabian Peninsula coastline.

The Signs As Sharks

Aries- Bull Shark 

-highly aggressive,

-most dangerous shark in the world

Taurus- Tiger Shark 

-large sharks, extremely dangerous to people when provoked

-eats anything 

Gemini- Mako Shark

-extremely aggressive

-fastest species of shark 

Cancer- Nurse Shark

-normally docile and calm

-becomes extremely aggressive when assumed to be harmless

Leo- Great White Shark 

-Most well known shark, what most people immediately think of when they think “shark”

-big and imposing 

-thought to be extremely dangerous but is actually rarely aggressive past curiosity 

Virgo- Thresher Shark

-Uses precision of tail to stun or kill prey

-beautiful rainbow shaped tail

Libra- Leopard Shark

-extremely social, lives in schools

-easily identified by beautiful markings

Scorpio- Goblin Shark

-fearsome looking 

-extremely precise and skillful 

Sagittarius- Hammerhead Shark

-one of the most effective hunters

-senses movement of stingrays

-embarks on huge summertime migrations 

Capricorn- Frilled Shark

-traditional fossil shark (very little change over the years of evolution)

-rarely seen and does poorly in captivity 

Aquarius- Megalodon 

-extinct, but when they existed they were the largest marine animal to ever live

-fantastic and massive hunters

-still perplexes scientists 

Pisces- Whale Shark 

-large but gentle and slow moving

-playful and non-aggressive with divers

-gives rides

wafflewhooore  asked:

Favorite movies of the paladins to watch with their s/o

so i was supposed to finish this last night but then dakota was sweet :((( oh yeah and if anyone was wondering after last night sharks may have two (2) dicks but dont worry they most likely only use one at a time (scientists dont watch sharks have sex often so we don’t know for sure)

Lance

  • chick flicks with his s/o
  • you guys shipping characters and then getting excited when they interact
  • getting mad over the guys’ bad choices
  • “dON’T KISS HER OH MY G O D”
  • “babe we are a much better couple”
  • you guys make these movies so much deeper then they have to be
  • “but he only liked her because she got prettier!”
  • “idk man but all i can say is Legally Blonde was better”
  • “legally blonde surpasses all of these movies tHAT’S AN UNFAIR COMPARISON”
  • he’s also watch disney movies with you
  • you guys analyze those as well

Keith

  • action movies!!!
  • he always roots for the good guys like always
  • probably predicts a fight before it happens
  • “yeah he’s not gonna win”
  • “tHAT WOULD NEVER WORK IN LIFE”
  • anyway he comes for the action, stays for the plot
  • not like he’s telling anyone that though

Shiro

  • kind of open to most genres
  • he does however enjoy mystery movies
  • but like to ease stress he likes to watch family friendly movies
  • like “cheaper by the dozen”
  • soft smiles and lots of cuddling
  • would probably also watch a documentary
  • he’s a very interested person ok

Pidge

  • thriller/psychological/mystery
  • She likes to think and thrillers usually make you think
  • if it was a movie and not an anime, i’d say she loved erased
  • she likes to test how smart she is like WHO is the killer
  • WHO are they running from
  • not really into gore though
  • stuff like Gone Girl (hAVEN’T WATCHED IT YET But based off what ive read about the book)
  • “inception was just weird”
  • “oKAY BUT IT KIND OF-”
  • “no, katie sweetie it made no fucking sense.”

Hunk

  • family/comedy
  • (okay but imagine movie night being you guys watching the food network!!!! i love the food network!!!! cooking shows bro!!!!! anyway)
  • disney movies!!!!
  • Moana would probably make him tear up me too hunk
  • Also, the Aristocats, 101 Dalmations, the ORIGINALS
  • he finds them calming and also fun
  • he cant stand pidges movies he always walks right out of the room when she starts one
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Fins up if you’ve ever wanted to be a shark scientist! 

Our own Dr. Sal Jorgensen and his colleagues are living the dream: tagging and observing California’s white sharks to uncover the mysteries of our local mega-fish! 

Check out out they’ve been up to lately at the Farallon Islands in part one of a two-part video series. Next episode tomorrow! 

ask-leumas  asked:

Huh, that fact about the Goliath dire Blaziken where natural resources couldn't sustain them optimally reminded me a theory about the Megaladon shark. Some scientists theorize great white sharks could grow into the size of their ancient ancestors, but can't due to lack of food, among other environmental factors.

Pre’y much, yeah. Meanwhile their domestic counterparts were bred over a century to produce a smaller, more manageable, and less murder-y version. 

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Scientists at the Pacific Shark Research Center have discovered a new species of Lanternshark. The sharks give off a dim glow thanks to tiny organs in their skin called photophores. When seen from below, they blend in with the dim light that filters down to their dark hunting grounds from the ocean’s surface. In this context, glowing is actually an effective form of camouflage. Lanternsharks are incredibly sneaky predators. 

Researcher (and shark-discoverer) Vicky Vásquez was describing the sharks’ special power to her young cousins when they suggested the common name Ninja. Its scientific name Etmopterus benchleyi honors Peter Benchley, the author of the novel Jaws who became a vocal advocate for shark conservation. 

Image credits: Dr. Douglas J. Long/Dr. Ross Robertson/Journal of the Ocean Science Foundation

Meet the Extremely Rare Pocket Shark

Museum scientists are getting an up-close look at an extremely rare—and extremely small—shark by taking high-resolution, three-dimensional x-ray scans.

National Oceanic and Atmospheric Administration (NOAA) researchers were trawling in the Gulf of Mexico for a sperm whale feeding study in 2010 when they inadvertently pulled up a tiny, odd-looking shark with a bulbous head and rows of sharp teeth. NOAA researchers subsequently identified the creature as the rare pocket shark (Mollisquama sp.). The specimen is only the second ever collected, 36 years after the first one was found off the coast of Chile.

Named for two small openings above its pectoral fins, the pocket shark is still mostly a mystery, as is the purpose its pockets serve. But instead of dissecting this rare 5.5-inch-long specimen, scientists have turned to non-destructive x-ray techniques: computed tomography (CT) scanning in the Museum’s Microscopy and Imaging Facility and at the European Synchrotron Radiation Facility (ESRF) in France.

“The level of detail we can achieve through x-ray imaging is just incredible,” says John Maisey, a curator in the Museum’s Division of Paleontology who has been working with NOAA researchers and Museum Axelrod Postdoctoral Fellow John Denton to scan the specimen. “It allows you to look at these priceless specimens in a way you couldn’t have 10 or 15 years earlier.”

The CT scans proved especially valuable for counting the vertebrae of the pocket shark, the smallest of which were too small to be picked up using standard x-ray imaging, and for counting the teeth. Many of the specimen’s teeth were missing, but by rotating the image of the jaw and examining its inner surface, researchers were able to count the tiny new teeth coming up to take their place.

The species appears to be closely related to cookie cutter sharks, which feed by taking bites out of the skin of larger animals. And the anatomy of the pocket shark’s jaws and teeth indicate that it inhabits a similar ecological niche. 

As for the shark’s mysterious pockets, one working hypothesis is that that they might emit a bioluminescent fluid to either attract mates or to confuse predators. Maisey and Denton are now poring over the extremely high-resolution scans taken at ESRF with Mark Grace, the biologist with NOAA’s Southeast Fisheries Science Center who discovered the specimen, to learn more about their anatomy.  

But anything gleaned from the scans will likely remain hypothetical until scientists can observe a pocket shark in action.

“I would love to see a pocket shark alive in its environment,” Grace says. “But the CT scans are the next best thing.”

This story was originally published on the Museum blog. 

At some point in Ichthyology
  • Fish Scientist 1: what are we gonna call this species of shark with spots?
  • Fish Scientist 2: leopard shark?
  • Fish Scientist 1: no that's already taken.
  • Fish Scientist 2: how about zebra shark?
  • Fish Scientist 1: do zebras have spots?
  • Fish Scientist 2: idk who cares? No one will notice.

The elusive Megamouth shark, Megachasma pelagios, cruising the waters at night.

Scientists believe that Megamouth sharks not only swim with their huge mouths open to consume prey such as krill, but also attract prey to their open mouth with bioluminescence. 

Photo courtesy of Discovery’s Shark Week 2014

An unofficial world record catch for a bull shark. Marine scientist Neil Hammerschlag caught the estimated 10 ft long 1000 pound beast just fishing off the reefs of the Florida Keys. The shark was tagged and released as part of his teams research.  Measurements were not taken as this was not fishing for a “trophy” fish, although this sure as hell would be one. Better they let it go.

Eugenie Clark, whose work in the field of marine biology was absolutely groundbreaking, passed away this morning at the age of 92.

Not only did she make countless discoveries about many species of fish. Not only was she one of the first scientists to believe that sharks were more than mindless killers, and publish numerous studies demonstrating the complexity and intelligence of the incredible creatures. Not only was she a huge advocate for them, constantly working to teach the public about how amazing sharks, and all ocean creatures are, and how important it is that we actively work to protect them.

She was a woman marine biologist at a time when the field was almost completely dominated by men, but she never let anyone stop her from achieving her dreams. (When she applied to a Ph. D. program at Columbia, she was told by a scientist there, "If you do finish, you will probably get married, have a bunch of kids, and never do anything in science after we have invested our time and money in you.“ She then went on to get her Ph. D. elsewhere, and do many, many things in science.)

She founded a laboratory, first called the Cape Haze Marine Laboratory, which then went on to become the Mote Marine Lab, one of the most important centers for shark research in the countries.

She literally changed the game in marine biology. But she was also just an incredibly kind, curious, and bold individual, who always sought to inspire young scientists and ocean activists.

Eugenie Clark was my hero as a child, and honestly, one of the reasons I’m pursuing a career in science. I had the absolute honor of meeting her (twice!!) and she was so, so, so incredibly kind to me, giving me words of encouragement, talking to me about my interests, and just truly, being one of the most humble, intelligent people I’ve ever met.

She changed my life, and I am so grateful to have had the chance to both know about her, read about her life and her work, and to talk to her.

Thoughts on Shark Week 2015

This year’s Shark Week was so much improved! There was a much higher focus on science, biodiversity and conservation, and a lot less sensationalism and pseudoscience. So if you had decided to not tune in this year after last year’s disappointments, I advise you to give it a try! I have listed below some of my favorite episodes that really are worth the watch. 

Originally posted by leonettaisas

This 3rd installment of Alien Sharks was incredible. I am still slightly obsessed with this episode. I could feel the rush of adrenaline as they were tagging the megamouth shark just sitting on my couch! SO.MUCH.SCIENCE. I loved it! I learned about biofluorescence (i have to make a separate blog post about that) which I honestly didn’t even know existed until then! The megamouth (I also have to make a separate blog post about that!) expedition was just insane. Can we get a follow-up on that once the tag gets released? I’m not sure when they tagged the shark/when this episode was filmed. I need to know the results! 

Sharks of Cuba was also one of my favorites. It focused on a joint U.S.-Cuban team of scientists studying the sharks of Cuba. The area they were in really goes to show how wonderful Marine Protected Areas are. The reefs there were gorgeous, and the silky sharks and remoras shown on screen were huge! You could tell the ecosystem around the island is thriving, undisturbed. We got to see the first tagging of a shark in Cuba, as well as the tagging of a rare longfin Mako! 

Ninja Sharks are also incredible. I LOVE learning about all those more ‘obscure’ sharks, like the Salmon shark and Thresher shark, and what their ‘ninja’ skills are. Loved all the graphs and scientific facts! Shark Planet was a 2 hour recut of the BBC Earth "Sharks" series, and it was AWESOME. I mean, we all know the BBC wildlife documentaries are incredible, so I wasn’t expecting anything less. We saw so many shark species, and some shark behavior that we never really saw before (epaulette sharks walking across land, what?!). 

Originally posted by coloredyouth

Overall, I was quite satisfied with this year’s show. There were still some very low lows (a Great White serial killer? “Oh there were two attacks 2 years apart right here so this must be the same shark”), but also some very high highs (ALIEN SHARKS!), and a lot of good things in between. 

Here is my personal list:

The AMAZING:  Alien Sharks, Ninja Sharks, Sharks of Cuba, Planet Shark

The Good:  Monster Mako, Shark Trek, Shark Clan

The Meh Okay:  Island of the Mega Shark, Bride of Jaws, Shark Island, Shark of the Shadowlands

The Bad: Super Predator, Return of the Great White Serial Killer

Shark Week definitely really needs to keep steering away from the speculation and sensationalism of Super Predators and Serial Killers and shark bite reenactments. I wish for less Great White Shark drama (although you may continue the Shark Trek series), and more endangered, rare and weird species (Salmon shark! Thresher Shark! Megamouth!! Yes please).  I give you two thumbs up, Discovery Channel, for moving in the right direction and turning this program around! Keep it going, and I look forward to next year.

Originally posted by tessasmile