That's what the crew of a U.S. Coast Guard ship discovered when their Pacific Ocean swim break was interrupted by an unexpected intruder.
"As if right out of a Hollywood movie, a 6-8 foot shark (no exaggeration) surfaced at the Rescue Door and was swimming toward 30-40 people in the water about 30 feet away," the U.S. Coast Guard Cutter Kimball (USCGC) wrote in a Tuesday Facebook post describing the incident.
The U.S. Coast Guard Cutter Kimball has been patrolling in the Pacific Ocean for the past several weeks conducting national security, search and rescue and fisheries operations, according to Military.com. To liven up the monotony of days at sea, the crew decided to take a swim break or "swim call," in official terminology.
More than 40 crew members, plus an inflatable unicorn, plunged into the water. Luckily, they had certain safety measures in place, such as a rescue swimmer, a smaller boat with extra crew and someone assigned to shark watch.
It is customary for Coast Guard and Navy vessels to set up shark or polar bear watches during breaks in these apex predators' habitats, Military.com explained. This precaution meant that bridge personnel were ready to alert the crew to the shark's presence.
To protect his crewmates, Maritime Enforcement Specialist 1st Class Samuel Cintron opened fire on the advancing shark to try and scare it away, CNN reported.
The USCGC described what happened next:
ME1 Cintron fired a well-aimed burst right at/on top of the shark to protect shipmates just feet away. It turned away for a few seconds then turned back. We kept directing people out of the water while keeping a clear line of sight on the shark. ME1 fired bursts as needed to keep the shark from his shipmates with amazing accuracy. The shark would wave off with each burst but kept coming back toward our shipmates.
The crew managed to get everyone out of the water safely, including the unicorn. And it appeared that the shark emerged unscathed too, a Coast Guard public affairs spokesperson told Military.com.
"Our goal was to keep it away from shipmates, not harm it if possible," the USCGC wrote on Facebook. "It was most likely curious and not looking for a meal. We picked our location to try and avoid such an encounter but it is their ocean after all. It later joined a few smaller buddies that showed up and they swam off together. "
A review of video footage of the incident revealed the shark to be a Long-Fin Mako or Pelagic Thresher Shark.
"Not something to mess with!" the USCGC wrote.
Mako sharks have been involved in three non-fatal unprovoked shark attacks, according to the Florida Museum's International Shark Attack File.
The overall risk of shark attacks is extremely low, according to the file. Any given individual has a one in 3,748,067 chance of dying in one.
In fact, sharks are at much greater risk from humans than we are from sharks, the museum pointed out.
"Most of the world's shark populations are in decline or exist at greatly reduced levels, as a consequence of overfishing and habitat loss. On average, there are only four fatalities attributable to unprovoked attacks by sharks worldwide each year. By contrast, fisheries remove about 100 million sharks and rays annually," it wrote.
Shark attacks are even rarer in the history of Navy or Coast Guard swim calls. Military.com found reports of one shark that turned up during a swim break off a submarine in Hawaii in 2009, but it did not have to be driven away by gunfire.
"We have hundreds of years at sea between all of us and no one has seen or heard of a shark actually showing up during a swim call," the USCGC wrote on Facebook. "This goes to show why we prepare for any and everything. We just didn't think it would be a swim call shark attack!"
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Fast fashion has been called the second dirtiest industry in the world, next to big oil, and how we color our clothes is a large part of the problem. Now, Colorifix, a UK biotech company founded by Cambridge University scientists, has developed a new way to dye clothes that doesn't harm the planet.
Historically, natural dyes extracted from plants and flowers were used to color fabrics. The production of modern chemical dyes uses more than 8,000 chemicals, solvents and additives to create different colors and effects on fabrics, reported Pure Earth and CNN. Many, like sulfur, arsenic and formaldehyde, are harmful to wildlife and humans, and end up in industrial wastewater from the dye production process, reported CNN.
In less developed Asian countries, where a large share of today's clothes is produced, weak regulations and/or enforcement allow textile manufacturers to dump toxic substances directly into local waterways, reported CNN. This has caused the dyeing industry to become one of the most environmentally harmful in the world. In fact, according to the UN Environment Program, around 20% of global wastewater is generated during textile dyeing and processing.
"When we realized that so much of the pollution comes from something as simple as putting color into our clothes, we thought 'there has to be a better way,'" Colorifix's CEO Orr Yarkoni told CNN.
According to Yarkoni, Colorifix's new method uses biotechnology and bacteria to eliminate the need for toxic chemicals and claims its processes use 90% less water and up to 40% less energy than conventional dyeing, reported CNN.
Unlike with natural dyeing, Colorifix pigments are not derived straight or extracted from plants or animals. And, unlike with chemical dyeing, they don't use anything hazardous in the process, explained Yarkoni in a CNN video.
Instead, Colorifix "copies nature's processes in a lab setting, by replicating the 'DNA message' that codes for color in an organism," according to CNN. This tricks the genetically-modified bacteria to create and fill up with those exact same colors.
"So what we can do is take a feather off a parrot, scrape a few cells off ... and in those cells, look for the DNA message 'make red,'" Yarkoni told CNN. "We can then put that same message into our microorganism that will make that same red that the parrot makes the same way that the parrot makes it."
Yarkoni's team then duplicates the dyed bacterial cells in a fermenting machine, feeding them sugar molasses and nitrogen — byproducts from the agricultural industry, LA BioTech reported. The cells duplicate themselves every 25 minutes. The fermentation process which duplicates the bacteria is similar to beer, but instead of making alcohol, Colorifix makes pigments, CNN reported.
In an industry-first, the dyed bacteria are then applied onto the fabric directly and heated until they burst, releasing their dye onto the fabric, LA BioTech reported. The cell membranes then wash off but the color stays.
"What we're doing is not just providing a new pigment. We're providing a new way of getting the pigment into the fiber," Yarkoni told LA BioTech.
This new way of applying dyes to fabrics is more efficient and environmentally-beneficial because it removes the middle step of isolating dyes from microbes and applying them to textiles, which is water- and chemical-intensive, Colorifix told CNN.
Yarkoni also touted the additional benefit of reducing fashion's huge carbon footprint from shipping. Currently, the industry produces more greenhouse gas emissions per year than all international airline flights and maritime shipping trips combined.
Rather than shipping large amounts of dye, Colorifix can send five grams of color-packed bacteria to a dyehouse, and the microorganisms will multiply within 10 days to the point where the factory can produce 50 tonnes of dye solution a day, according to CNN.
Competitor PILI, a French startup creating ready-to-use dyes from plant sugars and microbes, critiqued Colorifix's "grow your own" approach to dyeing because dyehouses will need to buy fermenting equipment and receive training on the process, CNN reported. These hurdles could create resistance to making the switch to sustainable dyes, Pili claimed, CNN reported. Other industry experts worried about the regulatory issues surrounding the transport of live microbes safely.
Colorifix has been hugely successful and received backing from Swedish fashion giant H&M. Colorifix has more customers than it can handle, and launched its first industrial trial at a Portuguese dyehouse last month, CNN reported.
"I truly believe that in the future, a very large proportion of our industry — if not all of it — will be based on these biological principles," Yarkoni told CNN.
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The bright patterns and recognizable designs of Waterlust's activewear aren't just for show. In fact, they're meant to promote the conversation around sustainability and give back to the ocean science and conservation community.
Each design is paired with a research lab, nonprofit, or education organization that has high intellectual merit and the potential to move the needle in its respective field. For each product sold, Waterlust donates 10% of profits to these conservation partners.
Eye-Catching Designs Made from Recycled Plastic Bottles
waterlust.com / @abamabam
The company sells a range of eco-friendly items like leggings, rash guards, and board shorts that are made using recycled post-consumer plastic bottles. There are currently 16 causes represented by distinct marine-life patterns, from whale shark research and invasive lionfish removal to sockeye salmon monitoring and abalone restoration.
One such organization is Get Inspired, a nonprofit that specializes in ocean restoration and environmental education. Get Inspired founder, marine biologist Nancy Caruso, says supporting on-the-ground efforts is one thing that sets Waterlust apart, like their apparel line that supports Get Inspired abalone restoration programs.
"All of us [conservation partners] are doing something," Caruso said. "We're not putting up exhibits and talking about it — although that is important — we're in the field."
Waterlust not only helps its conservation partners financially so they can continue their important work. It also helps them get the word out about what they're doing, whether that's through social media spotlights, photo and video projects, or the informative note card that comes with each piece of apparel.
"They're doing their part for sure, pushing the information out across all of their channels, and I think that's what makes them so interesting," Caruso said.
And then there are the clothes, which speak for themselves.
Advocate Apparel to Start Conversations About Conservation
waterlust.com / @oceanraysphotography
Waterlust's concept of "advocate apparel" encourages people to see getting dressed every day as an opportunity to not only express their individuality and style, but also to advance the conversation around marine science. By infusing science into clothing, people can visually represent species and ecosystems in need of advocacy — something that, more often than not, leads to a teaching moment.
"When people wear Waterlust gear, it's just a matter of time before somebody asks them about the bright, funky designs," said Waterlust's CEO, Patrick Rynne. "That moment is incredibly special, because it creates an intimate opportunity for the wearer to share what they've learned with another."
The idea for the company came to Rynne when he was a Ph.D. student in marine science.
"I was surrounded by incredible people that were discovering fascinating things but noticed that often their work wasn't reaching the general public in creative and engaging ways," he said. "That seemed like a missed opportunity with big implications."
Waterlust initially focused on conventional media, like film and photography, to promote ocean science, but the team quickly realized engagement on social media didn't translate to action or even knowledge sharing offscreen.
Rynne also saw the "in one ear, out the other" issue in the classroom — if students didn't repeatedly engage with the topics they learned, they'd quickly forget them.
"We decided that if we truly wanted to achieve our goal of bringing science into people's lives and have it stick, it would need to be through a process that is frequently repeated, fun, and functional," Rynne said. "That's when we thought about clothing."
Support Marine Research and Sustainability in Style
To date, Waterlust has sold tens of thousands of pieces of apparel in over 100 countries, and the interactions its products have sparked have had clear implications for furthering science communication.
For Caruso alone, it's led to opportunities to share her abalone restoration methods with communities far and wide.
"It moves my small little world of what I'm doing here in Orange County, California, across the entire globe," she said. "That's one of the beautiful things about our partnership."
Check out all of the different eco-conscious apparel options available from Waterlust to help promote ocean conservation.
Melissa Smith is an avid writer, scuba diver, backpacker, and all-around outdoor enthusiast. She graduated from the University of Florida with degrees in journalism and sustainable studies. Before joining EcoWatch, Melissa worked as the managing editor of Scuba Diving magazine and the communications manager of The Ocean Agency, a non-profit that's featured in the Emmy award-winning documentary Chasing Coral.