An Electric Eel Is Controlling the Lights on This Tennessee Christmas Tree
A Christmas tree at the Tennessee Aquarium has a shocking secret: its lights are triggered by the charges released by an electric eel.
The eel, Miguel Wattson, is already a star on Twitter, according to the Associated Press, and coders at Tennessee Tech University's iCube center figured out how to translate his shocks into tweets like "SHAZAM!!!!" and "ka-BLAMEROO!!!!!"
This Monday, though, he tweeted something else. A video of his electricity making the lights on a tree near his tank flicker on and off.
ICYMI, here's a video of yours truly attempting to use my discharges to power the lights on a Christmas tree. (SPOI… https://t.co/aMeeUlken1— Miguel Wattson TNAQ (@Miguel Wattson TNAQ)1575321776.0
Miguel doesn't directly power the tree, the eel's caretaker Kimberly Hurt told NPR.
"There is a sensor directly in his exhibit that picks up when he produces electricity," Hurt explained.
That sensor then "translat[es] when he's producing electricity to the lights."
The brightness of the lights varies based on what kind of shock Miquel produces. Electric eels produce high voltage shocks of up to 800 volts when they are stunning prey or trying to defend themselves. That means the tree is brightest when Miguel is eating.
Otherwise, eels produce shocks of around 10 volts in order to navigate and find prey despite their poor eyesight and the murky waters where they live, according to the aquarium.
During the rest of the year, the sensors in Miguel's tank are hooked up to an amplifier and LED meter to let visitors know when he is sparking. It wasn't difficult to hook the sensors up to a tree instead, and Hurt says they will bring the display back in future years.
"We want people to be interested in these animals and interested in protecting the waters that they live in," Hurt told NPR.
Electric eels aren't really eels. They are actually a kind of knifefish that live in the freshwater ponds and streams of the Amazon and Orinoco basins in South America, according to National Geographic. A study published in September revealed that what scientists thought was one species of electric eel is actually three, highlighting the extensive biodiversity of the Amazon region.
The fish can grow to be more than eight feet and 44 pounds, according to National Geographic. It is rare that their shocks kill humans, but they have the capacity to: multiple shocks can cause respiratory or heart failure. Miguel's keepers wear gloves to keep themselves safe, the aquarium says.
The Tennessee Aquarium isn't the first to bring the Christmas spirit to their electric eel display. The Living Planet Aquarium in Utah had a similar display in 2012, according to The Smithsonian. And an eel in Japan lit up a Christmas tree in 2015, according to Today.
Bill Carnell, a Salt Lake City electrician who set up the Utah display, says that the attention electric eels generate can help raise awareness about alternative means of producing electricity.
"Researchers looking to the future are trying to find ways to generate electricity through some kind of a biological process, rather than combustion or some mechanical energy. When you get into the science of the eel and you find that its body is constructed of all these little tiny batteries, of sorts, that are powered biologically, that is where the real interest is," Carnell told The Smithsonian.
Typhoon Molave is expected to make landfall in Vietnam on Wednesday with 90 mph winds and heavy rainfall that could lead to flooding and landslides, according to the U.S. Embassy and U.S. Consulate in Ho Chi Minh City. To prepare for the powerful storm that already tore through the Philippines, Vietnam is making plans to evacuate nearly 1.3 million people along the central coast, as Reuters reported.
EcoWatch Daily Newsletter
How does your burrito impact the environment? If you ordered it from Chipotle, there is now a way to find out.
- Food's Environmental Impact Varies Greatly Between Producers ... ›
- Panera Bread Becomes First Chain to Use Climate-Friendly Label ... ›
Are you noticing your shirts becoming too tight fitting to wear? Have you been regularly visiting a gym, yet it seems like your effort is not enough? It's okay to get disappointed, but not to lose hope.
By Sarah Steffen
A stretch of coastline in the Philippine capital, Manila has received backlash from environmentalists. The heavily polluted Manila Bay area, which had been slated for cleanup, has become the site of a controversial 500-meter (1,600-foot) stretch of white sand beach.
Sand Makeup Crucial for Ecosystems<p>While UNEP/GRID-Geneva generally supports finding <a href="https://www.dw.com/en/not-enough-sand-for-construction-industry-despite-abundance/a-49342942" target="_blank" rel="noopener noreferrer">alternative sources of sand</a> so as not to disrupt ecosystems in rivers and oceans when extracting them, Vander Velpen stressed it was vital to use sand which closely matches the makeup of the native sand to protect beach fauna.</p><p>"If you change the core characteristics of the native sand, the original sand, you need to do an environmental impact assessment (EIA) to find out how it's going to impact the ecosystem and nearby ecosystems," he told DW.</p><p>But according to Torres, such an assessment was not done in Manila.</p>
Beautification Stunt Instead of Proper Cleanup?<p>Manila Bay's waters are heavily polluted by oil and trash from nearby residential areas and ports. A huge "No swimming" sign warns visitors to stay away from the ocean.</p><p>Philippines' <a href="https://denr.gov.ph/index.php/priority-programs/manila-bay-clean-up/25-priority-programs/1825-frequently-ask-questions-faqs-on-the-dolomite-and-the-beach-nourishment-project" target="_blank">Department of Environment and Natural Resources (DENR)</a> has denied dolomite sand poses any risk to human health and the ecosystem.</p><p>However, scientists of the University of the Philippines have come forward disputing the DENR's claims. A <a href="https://biology.science.upd.edu.ph/index.php/ib-statement-regarding-dolomite-in-manila-bay/" target="_blank" rel="noopener noreferrer">statement by the Institute of Biology</a> said that using crushed dolomite did not address any of the rehabilitation phases and instead was "even more detrimental to the existing biodiversity as well as the communities in the area," pointing to the case of water birds. "The dumping of dolomite in Manila Bay has effectively covered part of the intertidal area used by the birds thereby reducing their habitat."</p><p>At peak migration season, Manila Bay is home to 90 aquatic bird species, including species of international conservation concern that are facing a very high extinction risk in the wild. </p><p>Authorities should focus on protecting and conserving biodiversity, the Institute of Biology added. "Rehabilitating mangroves is an example of a nature-based solution that is cheaper and more cost-effective than the dolomite dumping project," the scientists said.</p><p>Moreover, <a href="http://www.msi.upd.edu.ph/" target="_blank" rel="noopener noreferrer">the Marine Science Institute</a> has warned that prolonged inhalation of finer dust particles of dolomite could "cause chronic health effects," leading to discomfort in the chest, shortness of breath and coughing.</p><p>They also warned dolomite sand grains would erode during storms and be carried out to sea, essentially being washed away.</p>
Rehabilitation vs. Reclamation<p>Environmentalists say covering up the beach doesn't address the real issues of the bay. Torres and others believe the best way to clean up Manila Bay is not to add anything, but rather remove trash and pollution.</p><p>"There have been studies saying much of the waste comes from already collected waste — so these are open dump sites along the coast that get washed up because of the rain," Torres said.</p><p>She criticized the authorities for continuing to push reclamation projects she says are at odds with each other. These projects will affect large areas of mangrove forests, she said, and experts warn that this, in turn, exacerbates coastal erosion.</p><p>"If you've removed the areas that helped trap the sand, like mangrove forests, then the likelihood increases that you will have to nourish a beach. Same as building right up to the waterfront," said Vander Velpen of UNEP/GRID-Geneva.</p>
Plenty of Sand in the Sea?<p>The question of Manila's contentious white beach echoes larger questions about sand mining worldwide. <a href="https://unepgrid.ch/storage/app/media/documents/Sand_and_sustainability_UNEP_2019.pdf" target="_blank">Global sand consumption has tripled</a> over the past two decades, UNEP/GRID-Geneva has found. A huge chunk of it is now taken up by construction.</p><p>"Many operate on the assumption that natural sand is endless in its supply," said Vander Velpen.</p><p>Sand scarcity is a concern shared by Stefan Schimmels of <a href="https://www.fzk.uni-hannover.de/fzk_start.html?&L=1" target="_blank">Forschungszentrum Küste</a> who's done extensive research on shore nourishment to stop coastal erosion. And as climate change and rising sea levels are threatening coasts, demand for sand will grow even more.</p><p>A large study, the <a href="http://www.stencil-project.de/wp-content/uploads/2019/10/STENCIL_SWOT_Analyse_191026.pdf" target="_blank">Strategies and Tools for Environment-Friendly Shore Nourishments as Climate Change Impact Low-Regret Measures (STENCIL project)</a>, focused on the German island of Sylt, a popular vacation spot.</p><p>About 1 million cubic meter of sand per year is used to maintain the coastal area of Sylt, STENCIL project head Schimmels said. That's about 100 million 10-liter buckets of sand.</p><p>When sand was extracted off the coast of Sylt, underwater craters were formed. "You can still detect these craters even decades later," Schimmels told DW.</p><p>"Also when you add a couple of meters sand onto the beach — you essentially bury all things that do creep and fly," he said. "How quickly will they recover?" Schimmels said more research was needed as there was still too little known about long-term effects on the environment. </p>
Criticism Piling Up<p>As for Manila's artificial white sand, it looks like some might have already been blown away by a recent storm. DENR claims it wasn't washed away, but said that grayish sand, stones and other material had simply piled up over the dolomite sand. People in Manila have tweeted photos showing how the storm has ravaged the beach. </p>
<div id="adc0b" class="rm-shortcode" data-rm-shortcode-id="98f9390db6bb81cb421aaf0bb9d9a6fb"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1318816633280851969" data-partner="rebelmouse"><div style="margin:1em 0">Exactly one month after giving excited netizen a glimpse of Manila Bay white sands, look what happened now after ju… https://t.co/X0Z9i0bPB0</div> — M*A*S*H (@M*A*S*H)<a href="https://twitter.com/Magtira_Matibay/statuses/1318816633280851969">1603265362.0</a></blockquote></div><p>Authorities have been called tone-deaf for spending around 389 million pesos ($8 million) on a beach nourishment project in the middle of a raging pandemic.</p><p>An image of cake iced with the words "It really hurts - that's [worth] 389 million pesos?" has since gone viral.</p>
<div class="rm-shortcode" data-rm-shortcode-id="4387aad52ea316e4db7330052318ca2f"><div class="fb-post" data-href="https://www.facebook.com/theweekendpatisserie/posts/144564207350008"></div></div><p>"It's just a waste of precious resources," Torres said. </p><p>The environmental activist now also worries that she might be labeled a terrorist for speaking out under the <a href="https://www.dw.com/en/philippine-anti-terrorism-law-triggers-fear-of-massive-rights-abuses/a-53732140" target="_blank" rel="noopener noreferrer">Philippines' controversial new anti-terrorism law</a>. She says she could be arrested for inciting fear when talking about environmental dangers.</p>
- 8 World Cities That Could Be Underwater as Oceans Rise - EcoWatch ›
- Endangered Migratory Birds on Collision Course with New Airport ... ›
- How Is Climate Change Affecting the Philippines? - EcoWatch ›
A pair of studies released Monday confirmed not only the presence of water and ice on the moon, but that it is more abundant than scientists previously thought. Those twin discoveries boost the prospect of a sustainable lunar base that could harvest the moon's resources to help sustain itself, according to the BBC.
- Scientists Find Rust on the Moon 'Puzzling' - EcoWatch ›
- Historic NASA/SpaceX Mission Could Pave the Way for Space ... ›
- NASA Study of Increasingly Dire Global Water Shortages Finds ›
- Groundbreaking NASA Announcement: Evidence of Liquid Water on ... ›