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Saving Sharks, One Fin at a Time


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Saving Sharks, One Fin at a Time

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Blacknose shark out of water

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Tiger shark satellite tagged by the RJD

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Drawing shark blood test

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Hammerhead shark satellite tagged by the RJD

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JULY 2012

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By:

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University of Miami's RJ Dunlap Marine Conservation Program
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Whether you love or fear them, sharks are undeniably fascinating creatures that play a vital role in the health of marine ecosystems. With over 400 species of sharks ranging in size from 6 inches to 40 feet long, they are certainly diverse as well. Each species has evolved special adaptations to their environment that have helped them to survive since before dinosaurs.
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Much like the lions of Africa's Serengeti, as apex predators living at the top of the food web, large sharks play a pivotal role in maintaining the health and balance of marine ecosystem. Changes in their abundance or behavior can have cascading effects on the whole community. This is a problem because rampant overfishing is causing drastic worldwide declines in shark populations. As a result, one in three species of pelagic sharks are now threatened with extinction.

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Mar 27
Zoe M (Mar 27 2022 9:25PM) : Good evidence for my argument

Confounding the problem is that most sharks are killed solely for their fins to make shark fin soup, an Asian delicacy and status symbol. The fins have no color, taste or smell, but because it is a cultural sign of wealth, a single bowl of shark fin soup can cost well over $100! So, what can be done?

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Research and Education

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The RJ Dunlap Marine Conservation Program (RJD) at the University of Miami is working to protect global shark species through cutting edge scientific research and hands-on field and virtual learning experiences to graduate, undergraduate, high school students. Over the past six years, RJD has provided almost 4000 students with real in-field research experiences and reaches global populations through their online interactive website. The RJD Program's research and education work, led by UM Research Assistant Professor Dr. Neil Hammerschlag, is generating unique solutions to help conserve threatened shark populations.

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The dangers in eating shark fins

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A study recently completed by Hammerschlag and colleagues from the University of Miami revealed that shark fins contain high concentrations of a neurotoxin called BMAA, short for â-N-methylamino-L-alanine. BMAA has been linked to diseases such as Alzheimer's, Parkinson's and ALS. The study suggests that consumers of shark fins (and other parts) are at a risk of getting these neurological diseases. The study has generated tremendous scientific, media and public attention that will hopefully lower the demand for shark fins and help protect people from these neurodegenerative diseases.

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Mar 27
Zoe M (Mar 27 2022 9:24PM) : Really interesting piece of information that I want to involve in my essay
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The value of sharks

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In 2009, Palau declared their waters a "shark sanctuary," making it illegal to harvest sharks. This is because, in addition to their ecological importance, it has been estimated that one individual living reef shark in Palau can be worth up to $1.9 million, compared to $108 if it were killed for its fins. Dr. Hammerschlag and his graduate student, Austin Gallagher, conducted a global analysis of all shark diving ecotourism and showed that the growing tourism industry generates more money to local economies than does killing the sharks for their fins to make soup.

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Mar 27
Zoe M (Mar 27 2022 9:24PM) : Similar to an MPA almost
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Moving on the right direction, there has recently been a surge of laws to protect sharks. Here are a few the recent steps.

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  • September 2009 - Palau created the first national shark sanctuary.
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  • December 2010 - The United States passed the Shark Conservation Act which bans shark finning in US waters.
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  • June 2011 - Honduras created a shark sanctuary protecting sharks along both their Pacific and Caribbean coasts.
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  • July 2011 - The Bahamas banned all commercial shark fishing.
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    Mar 27
    Zoe M (Mar 27 2022 9:25PM) : Something I need to look into, need to see the benefits
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  • 2011- 2012 A ban on selling shark fins has either passed or has legislation pending in California, Hawaii, Oregon, Washington, Florida, Illinois, Maryland, Virginia, and New York.
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DMU Timestamp: March 22, 2022 23:52

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