Best Places to Dive: The Ghost Fleet of Truk Lagoon, Federated States of Micronesia

July 20, 2023

Diving

“Growing up, we learn about history through books. We even get to take trips and see battlefields, buildings, and relics. Few of us ever get to see the evidence, examine it, lay eyes on the details and the human element,” begins Mike Gorek. Mike is Senior Maintenance Engineer at Greater Cleveland Aquarium, and we like to say that he’s been here since before we had water. He’s talking about a remarkable dive trip – a liveaboard at Chuuk Lagoon in Micronesia.

“It was a vacation. I got to live on a boat in the middle of nowhere in a country that few people know exists, and fewer could find on a map. Unfortunately for the people of Chuuk, the Imperial Japanese Navy were aware of their existence and went above and beyond to impose their will on the natives of these islands, all for strategic advantage for the Pacific,” says Gorek.

A little background about the island nations of the Western Pacific: Micronesia is a subregion in Oceania consisting of over 2,100 small islands and consists of four main island groups: the Mariana Islands (which includes Guam, the largest island in the region), the Marshall Islands (site of 24 nuclear tests at Bikini Atoll by the United States in the 1940s and 50s), the Gilbert Islands, and the Caroline Islands, which includes the Federated States of Micronesia (FSM). These island chains are no strangers to colonialism, and FSM was captured by Japan in World War I. During World War II, Chuuk Lagoon served as the Empire of Japan’s naval base in the South Pacific theater. It can be confusing, but Chuuk refers to the state and the land, Truk refers to the lagoon and dive sites. In February of 1944, just over two years after Pearl Harbor, the United States Navy launched Operation Hailstone to take out the Japanese fleet.

“In the wee hours of February 17th into the 18^th, American forces decimated the Japanese fleet. Over 250 aircraft and north of 50 ships were destroyed and/or sent to their resting place on the bottom of the ocean,” Mike says about Hailstone. A generation later, this site of incredible carnage lures wreck divers from around the world. I’ll let Mike tell it.

“For a week some 59 years (after the attack), I stepped aboard the Odyssey to dive the wrecks of Truk Lagoon. We landed on a short runway where, from the plane, there’s no visible land and your luggage is dumped through a hole in the wall with a front-end loader. There were 25 dives over six-and-a-half days, most surpassing 30 meters, culminating with the San Francisco Maru. (Its deck is 165 feet and, while passing through the cargo hold at 186 feet, we still hadn’t reached bottom.) Most of the ships we encountered were merchant ships converted to military use for the Imperial Japanese Navy.

The thing about war you never see is the human element, in this case, sake bottle after sake bottle, medical tools, gas masks, rubber boots, tile latrines and the head on the boats, tools, air compressors, and gauges stuck in their resting places. But beyond any of these relics were human remains themselves—femur bones on an operating table or even a human skull. All these things littered these wrecks through the mid-1980s, though less these days. Ships that stood proud and tall, are now reduced to fields of soft coral playing home to fish, crab, octopus and everything else you can possibly think of.

There were cargo holds filled with trucks, motorcycles, Japanese Zeros and an abundance of surplus parts . . . all just frozen in time. Periscopes on a submarine tender, bulldozers encrusted to steel, waiting for their opportunity. What was really astounding, the biggest take away, was the raw power of black powder. We crawled through two-inch think plated steel mangled from a torpedo blast.”

Initially explored in 1969 by legendary oceanographer Jacques Cousteau and often referred to as the “Ghost Fleet of Truk Lagoon”, Chuuk Lagoon is now known as the world’s greatest collection of diveable World War II Japanese shipwrecks.

The Ghost Fleet of Truk Lagoon is the tenth and final in our series of the Aquarium dive team’s favorite dive locations. Thank you for all the readers who’ve kept up and those who come back to the series. If your destination wasn’t on our list, suggest somewhere new we might want to explore.

Ray D.

Flipping the Script to Save Sharks

July 28, 2021

Conservation

Written by Greater Cleveland Aquarium

Think about spiders, piranhas, or snakes. Simply the sound of some animals’ names causes fear and panic. Whether it stems from tall tales or a few chance encounters, unfortunately for the animals involved, bad reputations developed over time tend to stick. Sharks might be the ultimate example of this situation. There have been many movies about sharks made over the years. A recent study from the University of Australia asserted that “almost all of these films (96%) overtly portrayed shark-human interactions as being potentially threatening to humans.” How factual and accurate have these movies been to sharks? Let’s take a closer look at a few of them.

In Jaws, Amity Island was terrorized by a Great White shark that ruined quite a few people’s vacations and the blockbuster film’s protagonists indeed ended up needing a bigger boat to catch this predator. Jaws had such an impact on our collective psyche that the reputations of Great Whites and other shark species remain affected by the movie to this day—46 years after the motion picture came out. The big myth in Jaws is that sharks specifically target humans. In truth, we simply are not on a shark’s menu. Rarely do humans and sharks come in contact, but IF they do, sharks mistaking a person for a seal or another one of their actual prey items might take an exploratory bite before quickly realizing the mistake and swimming off. A vengeful, human-seeking shark like the Great White in Jaws doesn’t occur in our oceans.

Many shark movies since Jaws have leaned into a more fictional sci-fi component, such as Deep Blue Sea, The Meg and, of course, all the Sharknado films. (They apparently made six so far?!). I hope I don’t need to let you know that no one needs to fear long extinct predators, DNA-altered sharks or waterspouts causing sharks to attack humans in the sky and on land.

But there are some movies that could seem very realistic to the average movie fan, such as The Shallows. This film finds an injured young surfer fighting for her survival in the open water while the Great White shark that bit her circles and zeroes in on its compromised target. Similarly, to Jaws, this movie portrays the shark to be following a prolonged plan of attack on our species, although on a smaller scale. Sharks don’t spend extended periods of time playing this cat-and-mouse game with prey. Many sharks like the Great White must be swimming constantly to breathe, and sharks are too smart to waste time and energy for very long before moving on to the next area or potential meal.

It’s important to know that we are not telling you to never watch another shark movie ever again. I love all kinds of movies and I know these thrillers can be fun to sit down and enjoy. We just ask to do your best in not letting television and movies fully form your opinion of animals like sharks. As apex predators, sharks are extremely important to the health of the oceans on which humans rely heavily. It’s vital that we are constantly trying to improve the public opinion of sharks for their overall conservation. A third of all shark species are threatened or endangered, and movies have done their part in contributing to the decline. Going forward, we need to try and continue to flip the narrative on sharks, talking about them in a positive way and focusing on the facts to protect them as a species and ultimately protect our oceans.

-Matt D., Education Coordinator

A Spin on the Laundromat: Moon Jellyfish

September 28, 2019

Species Highlights

Written by Greater Cleveland Aquarium

You may wonder as you walk through the Greater Cleveland Aquarium’s Coastal Boardwalk Gallery why there is a giant washing machine. As you get closer, you will see what is gently swirling in the fanciful exhibit—moon jellyfish. The decision to showcase these animals in such a way came from Director of Artistic Production and Operations, Bruce Orendorf.

Bruce had a few ideas about how to fit the new exhibit in with the gallery’s deliberately kitschy boardwalk theme. The jellyfish exhibit uses a circular kreisel tank that causes the water to flow in a circular motion and enables the animals to rise and fall, but moves slow enough so that they are allowed to move freely as well. In thinking about the exhibit’s relationship to a boardwalk Bruce thought, “Cotton candy machine?”, but ruled that out as that kind of machine operates horizontally, not vertically. Then he thought, “You know what that looks like? A washing machine.”

The moon jellyfish (Aurelia aurita), which gets its name from four internal gonads that have a moon shape, cannot swim, so their movement in the water relies on currents. They use currents to move through the water to find their prey, which consist of zooplankton, fish eggs, larval crabs and shrimp. Here at the Aquarium, their diet consists of artemia nauplii, a form of brine shrimp.

“I want people to find them as interesting as I do,” said Aquarist Bethany Hickey, who is in charge of the exhibit, and who has a particular interest in invertebrates. Hickey says that ensuring that the temperature, as well as the water currents, mirror that of the environment these animals live in, is crucial to their survival. “They are very susceptible to any environmental changes, and that necessary stability is somewhat challenging to maintain in the exhibit,” she said.

After landing on a name, Bruce built the façade in-house and had signs made that were similar to what you would see in a real laundromat, but would also work within the Coastal Boardwalk theme.

Now you know some of the thought and planning that goes into creating a new exhibit. Next time you visit, check out the jellyfish in the Blue Moon Laundromat.

– Neda Spears

5 Tips to Recycle Responsibly

September 3, 2019

Conservation

Written by Greater Cleveland Aquarium

We all want to do our part to help the Earth, but sometimes we feel we just we don’t know how. Nine out of 10 people said they would recycle if it were “easier.” Here are 5 simple tips to become a recycling regular:

1. Follow City’s Pickup Standards.

Depending where you live, recyclables are either collected in blue plastic bags or loose in bins. Follow the regulations of your City to ensure extra plastic is not wasted. If your City does not require collection in plastic bags, use a bin or cart when taking out or dropping off recycling.

Collecting recyclables in plastic bags can cause issues with the recycling equipment and sorting machines. Plastic bags can get tangled and contaminate sorted recycling bins creating more trouble and waste. Because of this, they can end up in landfills, blow away and clog our waterways, oceans and seas.

Plastic bags, like grocery bags should never be recycled with your recyclables. Collect plastic bags and consider looking into collection programs at local grocery stores and retailers. To find a location accepting drop-offs near you, check out plasticfilmrecycling.org.

2. Only recycle clean, empty containers.

Rinse out your bottles, jars and cartons before throwing them in the recycling. Remember, that pizza box isn’t recyclable. While it is cardboard, it can never be clean and free of grease and food remnants.

3. Replace bottle lids after cleaning.

Plastic lids can now be recycled but they can’t be recycled alone. Bottle lids that are thrown into recycling alone can be hard to spot and are often lost in the process of sorting. This means they can end up with the trash and head to a landfill. After you empty and clean your containers, make sure to put the caps back on.

4. Don’t mix everything together if you’re unsure.

When recycling, it is important not to “wish cycle”. Wish cycling is a term used to describe when someone puts items in their recycling and is unsure if it’s recyclable or not. This creates more waste and contaminates items that could have been recycled. While it feels good to recycle more items, make sure you only recycle the “core” recycling items at home: cans, cartons, glass bottles and jars, paper and boxes, and plastic bottles and jugs.

5. Research your city’s recycling policies.

If you’re interested in learning more about how you can continue or start recycling correctly, research your City’s website to find out what items are accepted, and the best way to recycle. Each site will address any frequently asked questions you might have on recycling properly where you live. If you live in Cuyahoga County, you can find more information at cuyahogarecycles.org.

Species Highlight: Poison Dart Frog

August 26, 2019

Species Highlights

Written by Greater Cleveland Aquarium

Poison dart frogs got their moniker from indigenous Central and South Americans using the toxins the animals secrete through their skin on hunting arrows. We talked to aquarist Connor Craig to learn more about some of the Greater Cleveland Aquarium’s newest (and deadliest) residents.

Poison dart frogs can be found in nature in the humid rainforests of Central and South America. Their vivid coloring is a form of protection from would-be predators. “A poison dart frog’s bright color advertises the fact that it’s poisonous, so they don’t get eaten,” says Craig adding that although darts frog come in a variety of hues, their color doesn’t correlate to how poisonous they are.

Their deadly poison comes from the frog’s diet of different small insects like ants, small flies and beetles. In the Aquarium, the poison dart frogs eat fruit flies, pinhead crickets and a vitamin supplement to ensure proper nutrition. “The controlled diet doesn’t allow for the development of the poison for which these animals are known,” says Craig.

The only natural predator of the poison dart frog is the fire-bellied snake (Leimadophis epinephelus), which has developed a resistance to the frog’s poison. However, the biggest problems facing poison dart frogs are related to human activity. “One of the first signs that something is wrong in an ecosystem is if indicator species, such as amphibians, start to decline,” Craig says. “Many species of amphibians are threatened from human activities like deforestation, the pet trade and deteriorating water quality.”

While deadly, imagine if their poison could be used to make someone feel better. Scientists are using the toxins blue poison dart frogs secrete to study how nerves conduct electricity to help them create new human painkillers.

Get an up-close look at green and black, Patricia dyeing and ‘Azureus’ blue dart frogs on your next visit to the Greater Cleveland Aquarium. Nature. It’s a curious thing.

– Hannah

5 Things I Learned: Cleaner Shrimp

August 20, 2019

Species Highlights

Written by Greater Cleveland Aquarium

Take a stroll down our Coastal Boardwalk Gallery and you’ll find all sorts of creatures. One of the most interesting that you’ll find in our invertebrate Touch Pool is the decapod crustacean, commonly known as a cleaner shrimp. These shrimp exhibit a cleaning symbiotic relationship with the fish they rid of parasites. Here are 5 facts that I have learned about cleaner shrimp.

You can come see a cleaner shrimp up close and even get a “mini-manicure” when they clean the dead skin from your fingers at the Greater Cleveland Aquarium’s Invertebrate Touch Pool. Nature. It’s a curious thing.

– Payton Burkhammer, Intern

Coral Reefs and Sunscreen

August 11, 2019

Diving

Written by Greater Cleveland Aquarium

What can I do, here in Ohio to help protect the coral reefs thousands of miles away? The answer may surprise you. There are numerous ways YOUR individual actions can either hurt or help coral reefs around the world. One such action is the selection of your sunscreen! The sunscreen you have at home may contain chemicals that are extremely dangerous for coral reefs.

Image source: http://rethinkcleveland.org/home.aspx

Sunscreens are important to us they help prevent skin damage from the harsh ultraviolet rays of the sun. But, the protection of our skin comes at a cost, a few of the chemicals used in sunscreens have been found to have negative effects on coral reefs. The ingredient oxybenzone is found in 65% of non-mineral sunscreens and it has recently been discovered to damage coral DNA. Oxybenzone, while thought to be an important ingredient for sunscreen has been found to negatively impact coral reefs across the globe.

In 2005 Dr. Craig Downes and the United States National Park Service were working in collaboration to uncover the cause of coral losses in the U.S. Virgin Islands when they stumbled upon the role sunscreen played in coral death. The tourists, sunbathers, snorkelers and divers lathered in sunscreen and to enjoy turquoise blue waters were introducing chemicals that kill the very corals and damage the ecosystem they are trying to enjoy.

Image Source: https://slideplayer.com/slide/4629733/

It is estimated that every year swimmers, snorkelers and divers introduce 14,000 tons of sunscreen to coral reefs. This introduction of the harsh chemical components in sunscreen, sea temperature rising and ocean acidification have worked together to create the perfect storm for coral reef destruction. Corals are living animals, not plants, these tiny animals build the foundations of the reef out of limestone. The tiny coral polyps live in large communities and play host to a special alga called zooxanthellae. The zooxanthellae live inside the coral and share food they produce from photosynthesis in return for their safe housing.

So, what can you do to help the coral reefs?

Consider looking into some of the many “reef safe” sunscreen options and/or avoiding the need for sunscreen by wearing a hat or UV-safe long sleeved shirt and pants to protect your skin. Alternatively, stay indoors instead of in the sun entirely. We need to be more aware of the impact of our actions even though they may seem inconsequential. Some states have begun to regulate the chemical components in sunscreen to help keep their coral reefs healthy.

Do your part and think about what you put on your body and into the ocean and coral reef ecosystem!

5 Things I Learned: Weedy Seadragon

August 7, 2019

Species Highlights

Written by Greater Cleveland Aquarium

Is that seaweed or a weedy seadragon? Seaweed-like appendages camouflage the weedy seadragon, helping it blend in to its costal Australian habitat. Want to know more? Here are 5 things I learned, but beware, their laidback surfer vibe is relaxing enough to put you to sleep:

Weedy seadragons are a Near Threatened species found along the southern coastline of Australia. You can see weedy seadragons and learn more about conservation during your next visit to the Greater Cleveland Aquarium. Nature. It’s a curious thing.

– Hannah Moskowitz, Intern

Shark Conservation: 4 Ways You Can Help

July 28, 2019

Education

Written by Greater Cleveland Aquarium

Sharks are some of the oldest and most complex organisms in the world and their absence would likely have a huge impact on the ocean ecosystem and our world as we know it. Today, more than 11,000 sharks are killed by humans per hour due to bycatch, finning and overfishing. With humans killing an estimated 100 million sharks a year, it’s critical that we work to protect them. Here are a few ways you can actively support shark conservation.

Education

One of the best first steps to helping our oceans and animals is to educate ourselves! Research organizations all over the world collect data and information about our effect on the environment. Evaluating their findings leads to discussions and discoveries of ways that we can make a better and more conscious impact on the world. Sharks4Kids goal is to create a new generation of shark advocates through curriculum, games, and activities that can be accessed on their website. Some other great places we can learn from include:

Charities/Research Organizations

Supporting local and global organizations making a difference is important too. Support can be in the form of monetary donations that allow scientists to fund research vital to understanding the environment. It can also be in the form of advocating and sharing the knowledge we get from these organizations with others. The Shark Research Institute in Princeton, NJ conducts some of the most well-known shark research in the world. With one of the largest collections of data on these animals, the Institute is able to provide credible information to the media and help deter misconceptions about sharks. Their efforts to help change the image of sharks is revered worldwide. Some other great places to look into include:

Reducing Single-Use Plastic

Reduce, reuse, recycle—one of the best known conservation slogans of all time is still an important and effective way to help cut down on pollution that directly affects sharks. Reducing our reliance on single-use plastic can yield amazing results. By reducing plastic usage less trash accumulates in the ocean and less sharks and their natural food sources such as sea lions and sea turtles will consume these items. When we refrain from polluting our waters we can in turn make them cleaner and there will be less of a chance for sharks to consume plastic which can be harmful. Ocean 4 Plastic is an organization with a mission to remove plastic from oceans. Their two largest projects located in Haiti and Bali guarantee one pound of trash removal per $20 donation. Their website features a live count of how many pounds of trash have been removed from oceans by their projects. They also host cleanups worldwide and build recycling infrastructure in certain locations. Some other great places that actively do this include:

Shopping Sustainably

Being mindful about where you shop for and what foods you buy can have a greater impact than you might think. For example, the shark fin trade and production of shark fin soup greatly depletes shark populations worldwide. Choosing to shop in places that don’t support or contribute to these issues can help our shark populations grow. The Animal Welfare Institute provides a map showing what restaurants in the United States currently produce shark fin soup. They implore individuals to call those places and ask them to stop providing any products containing shark fins. Want to know more about the impact of your purchase? Check out:

And, if you want a more hands-on experience, come into the Greater Cleveland Aquarium to learn more about our sharks and why it’s so important that we keep them around!

– Kloby R.