sea trek coral world

Take a Guided Walk on the Ocean Floor in St. Thomas

What to expect.

• Get up close and personal with the inhabitants of the coral reef in a natural open ocean environment.
• A certified Sea Trek guide will lead you and your group of no more than 8 people along an underwater trail through the coral reef that surrounds Coral World’s Undersea Observatory.
• You are likely to encounter schools of horse-eye jacks, beautiful parrotfish, arrow crabs, sea cucumbers, and possibly even a stingray or sea turtle!
• Because of the weight and design of the helmet, you will have the ability to walk comfortably along the seafloor with a railing for added stability.
• Personalized photos and video of your experience will be available for purchase after your program.
• Your participation in this program helps Coral World Ocean Park support critical marine life conservation efforts.

Restrictions & Requirements

Customer reviews.

Visitor: $ 119

Residents: $ 107

Members: $ 107

Check out More Activities*

Dolphin kayak experience, dolphin moment, dolphin splash & swim, sea lion swim, sea lion’s lost treasure adventure, sea lion encounter, shark encounter.

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SeaTrek and Coral World

• Experience the thrill of SeaTrek, the world's leading underwater helmet-diving adventure
• Explore an underwater trail surrounded by vibrant fish and aquatic life
• Enjoy the comfort of our diving helmets, offering stability and a constant air supply, allowing you to breathe normally underwater
• Benefit from free time to discover Coral World, a popular St. Thomas attraction before or after your SeaTrek adventure
• Hurry to secure your spot for a once-in-a-lifetime experience

Imagine walking in zero gravity while surrounded by incredible aquatic life - that's Sea Trek, the world's premier underwater helmet-diving experience. And considering that you also get to see Coral World on this St. Thomas port tour , you'll probably wish the day would never end.

Following an orientation, a guide will lead you along an underwater trail through the coral reef that surrounds Coral World's Undersea Observatory. The tour lasts for approximately half an hour. Fish and other sea creatures swim right up to your visor. Because the animals are not captive, you never know what may come your way.

The helmet provides the air, weight and stability to walk upright under the water. There's even a handrail for additional support. Gloves and booties provide extra comfort. Your head and hair stay completely dry and you breathe normally inside the helmet. The helmet is large enough so you can even wear your glasses.

Friends and family who are not participants may watch you on your trek from the bottom level of the Undersea Observatory. Upon arrival at the park, you will be told what time your underwater walk is, so you can plan your time at the park. Your tour also includes free time to explore Coral World before or after your Sea Trek. They will also tell you what time to be back at the main gate for your transfer back to the pier.

A high-definition video and photos of your dive will be available for purchase.

The minimum weight to participate is 80 pounds. Space is extremely limited and will sell out. Book early to avoid disappointment.

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Sea Trek Helmet Dive at Coral World Ocean Park (ST33)

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Activity Level & Duration

Experience Type

Visit St. Thomas’s famed marine park and experience a thrilling underwater walk that’s literally swimming with sea life.

Be Floored by the Ocean Floor

Behold colorful fish and coral and then take the opportunity to explore the park and even enjoy some beach time.

Know Before You Go

View important additional information to help you prepare for this exciting adventure.

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$125.00 each

Total Cost    $NaN

Seatrek and coral world, seatrek and coral world imagine walking in zero gravity while surrounded by incredible aquatic life - that's sea trek, the world's premier underwater helmet....

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IMAGINE: You are about to have a dolphin encounter, but this dolphin encounter is different than anything you’ve ever experienced; it is a Sea TREK helmet dive underwater… with dolphins!

Your experience begins with a briefing that teaches you and other guests the proper ways to interact with a dolphin. You also learn some hand signals to communicate to the guide and the dolphins. After the briefing you are guided to a ladder in the water entry area. As you enter the water a high-tech Sea TREK diving helmet is placed gently on your shoulders and you immediately feel cool air as it gently blows into the helmet. You and the other TREKKERS descend one-by-one and reach the sea floor. The light filters in through the surface of the water 10 feet above, creating sparkling patterns. You are able to breathe normally, and are fascinated with the lightweight feel of your body as you walk and breathe underwater!

You queue up behind the other guests, as you notice your guide out in front. He makes some hand signals and an enormous, magnificent dolphin shoots past you. You can feel the physical strength of the animal as the rush of current streams by. The dolphin’s tail quickly moves up and down to propel him. He swims to the surface to get air, and on cue, he swims back past you, this time corkscrewing and twirling his body. Then the trainer moves directly in front of you. He calls the dolphin to you. The dolphin slowly swims past. You reach out your hand and it slides easily across his smooth body. You look into the dolphin’s intelligent eyes, and notice that he seems to be smiling. The trainer holds his hand up to the dolphin’s rostrum, feeding him tasty fish. Then the trainer signals upward and the dolphin bursts toward the surface and leaps out of the water! You can see the splash rippling outward, and you watch as he reenters the sea like a torpedo, immediately looking to the trainer who signals another go-around. His playfulness and cleverness are very apparent in his body language.

Next, each guest has a chance to gesture a hand signal to the dolphin. You point two fingers at the dolphin in a downward motion and are thrilled when you see the dolphin blow bubbles out of his blowhole as he sings underwater.

The trainer brings the dolphin to you. You take a few moments to admire the dolphin’s face through the clear, Sea TREK lens. Then, you pose for a photo as the dolphin swims over and plants a big kiss on your lens! That is one photo you will always treasure!

Next the Guide places your hand on the dolphin’s dorsal fin. The dolphin begins to swim forward, walking you gently down the path to the exit ladder. It is like you are holding hands with the amazing mammal! He stops by the ladder, and as you exit you get one last look at this incredibly beautiful, massive creature. That is truly an experience you will never forget.

During the Dolphin TREK® encounter, guests use standard Sea TREK helmet diving equipment. The same Sea TREK standards and restrictions apply to the Dolphin TREK experience. In some locations (such as Coral World Ocean Park in St. Thomas), there is no physical contact with the dolphins; rather, the experience is unscripted, unforgettable and undoubtedly unique!

If you are interested in Dolphin TREK business opportunities, contact [email protected]

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Four years later, Florida's rescued coral thriving on SeaWorld's 'Noah's Ark'

Four years after scientists raced around the Florida reef tract to rescue healthy coral amid an outbreak of lethal stony coral disease, a bunch still living on Key West time at SeaWorld in Orlando are thriving and making babies.

“We've been able to basically condition the corals to believe they're in the wild,” said aquarium supervisor Justin Zimmerman, who oversees SeaWorld’s Florida Coral Rescue Center. “To have the same moonlight cues and the same sunrise.”

Cracking that code, a relatively new advancement in coral restoration, has allowed SeaWorld and 19 other zoos and aquariums around the country, from Colorado to New Jersey, to maintain a lifeline for ailing reefs.

READ MORE: Research Breakthrough Finds Hope For Corals Infected With Stony Coral Disease — They Can Fight Back

“Twenty years ago when I started, I never thought we'd be at this point where we're rescuing corals,” Zimmerman said. “It's wonderful to be able to provide care. But at same time, it's concerning the change that's been happening.”

Since the outbreak was first detected off Virginia Key in 2014 amid dredging at Port Miami, the disease has decimated reef-building boulder coral and wiped out about 60% of the coral cover on Florida’s reef. That’s in addition to the widespread loss of branching staghorn and elkhorn coral in the 1970s.

It also led the National Oceanic and Atmospheric Administration to declare the entire tract impaired and conclude a barrier that once provided a powerful defense to flooding from hurricane storm surge no longer works. By 2100, scientists estimate the damaged reef could lead to $1 billion in additional flood damage.

Around the Caribbean, the disease has crippled reefs, from across the Gulf Stream in the Bahamas to Mexico and South America. In the U.S. Virgin Islands, the disease circled islands in just two years. Puerto Rico has lost 50% of its coral cover since the disease was detected there in 2019.

In response to the widespread losses, coral scientists began mapping an emergency rescue about five years ago. The Florida Fish and Wildlife Conservation Commission helped recruit zoos and aquariums to keep healthy coral being pulled from the reef by the University of Miami and other scientists in a first of its kind rescue effort. Last summer’s extreme ocean heat wave replicated that same kind of all hands on deck response.

In 2020, just before the pandemic hit, SeaWorld received its first batch of about 500 rescued coral, and then another 300. Zimmerman said. Good timing allowed the theme park to purchase a nearby aquarium facility shutting down to house the coral. The coral have since thrived, with most more than doubling in size. That led SeaWorld to expand its lab and open a second facility, tend to by eight full-time aquarists. The coral are doing so well that it’s created another problem: finding enough space.

“As the corals grow, they have a lot of babies,” Zimmerman said. “It takes a lot, unfortunately, a lot more space. So we're looking at expanding our footprint again.”

Keeping the corals on their native time is key to their health. With lights set to reflect sunlight and moonlight timed to Key West’s calendar means the coral continue to reproduce. The technology developed in England has allowed crucial reproduction that can amplify restoration work once the stony coral has died out, or scientists have discovered a cure.

“This method of light-assisted reproduction is good for everyone. It's good for the environment. It's good for scientists. It's really good for the coral,” Zimmerman said. “That we kind of cracked this code, it just happened in the last 5 or 10 years. And it allows all the work for this whole project to happen.”

Because stony coral is still infecting reefs, none of the rescued coral or lab-bred coral have been returned to the reef. But Zimmerman says he’s hopeful.

“This pipeline, this continuous cycle of corals can go back onto the reefs to restore Florida back to the way it was 30, 40 years ago,” he said. “It’s kind of a labor or love.”

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Sea Trek Helmet Dive at Coral World Ocean Park

St. Thomas, U.S.V.I.

Activity Level

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Wheelchair Accessible

Starting At

Minimum Age

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Approximately 3½ hours

Meals Included

Meals not included

Take a guided Sea Trek Helmet Dive to walk on the ocean floor at Coral World Ocean Park -- all the thrill of exploring like a scuba diver without the need for specialized training. The weight and design of the helmet allow you to walk comfortably along the seafloor with a railing for added stability. Since the helmet fits right over your head, you can wear your eyeglasses, and your hair won't get wet.

Following a 15-minute orientation, a certified Sea Trek guide will lead you and your group along an underwater trail through the coral reef at a maximum depth of 20 feet (6 meters). You are likely to encounter schools of horse-eye jacks, beautiful parrotfish, arrow crabs, sea cucumbers, and possibly even a stingray or sea turtle.

Professional divers take pictures and videos of your adventure, available for purchase afterward.

When you re-surface, continue your adventure with about 90 minutes to explore Coral World Ocean Park . See an amazing array of sea creatures in the Caribbean Reef Encounter. Juvenile sharks make their home in the Shark Shallows. Interactive time awaits at the Touch Pool with sea stars and sea cucumbers.

Visit the Lorikeet Garden and purchase a cup of nectar (at your own expense) to feed these playful and colorful birds. Shop at the gift boutique or relax at the Shark Bar for a snack (at your own expense).

A storage box is available for your belongings during your time underwater. Minimum age is 8 years. Minimum weight is 80 lbs. Wear your swimsuit under your clothing; bring a towel, reef-safe/biodegradable sunscreen, a cover-up for further protection from the sun, and a hat. Guests who are pregnant or have a heart condition are not allowed to participate. Waiver must be signed and medical conditions disclosed.

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Geographic coordinates of Elektrostal, Moscow Oblast, Russia

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Coordinates of Elektrostal in decimal degrees

Coordinates of elektrostal in degrees and decimal minutes, utm coordinates of elektrostal, geographic coordinate systems.

WGS 84 coordinate reference system is the latest revision of the World Geodetic System, which is used in mapping and navigation, including GPS satellite navigation system (the Global Positioning System).

Geographic coordinates (latitude and longitude) define a position on the Earth’s surface. Coordinates are angular units. The canonical form of latitude and longitude representation uses degrees (°), minutes (′), and seconds (″). GPS systems widely use coordinates in degrees and decimal minutes, or in decimal degrees.

Latitude varies from −90° to 90°. The latitude of the Equator is 0°; the latitude of the South Pole is −90°; the latitude of the North Pole is 90°. Positive latitude values correspond to the geographic locations north of the Equator (abbrev. N). Negative latitude values correspond to the geographic locations south of the Equator (abbrev. S).

Longitude is counted from the prime meridian ( IERS Reference Meridian for WGS 84) and varies from −180° to 180°. Positive longitude values correspond to the geographic locations east of the prime meridian (abbrev. E). Negative longitude values correspond to the geographic locations west of the prime meridian (abbrev. W).

UTM or Universal Transverse Mercator coordinate system divides the Earth’s surface into 60 longitudinal zones. The coordinates of a location within each zone are defined as a planar coordinate pair related to the intersection of the equator and the zone’s central meridian, and measured in meters.

Elevation above sea level is a measure of a geographic location’s height. We are using the global digital elevation model GTOPO30 .

Elektrostal , Moscow Oblast, Russia

For the first time Rosatom Fuel Division supplied fresh nuclear fuel to the world’s only floating nuclear cogeneration plant in the Arctic

The fuel was supplied to the northernmost town of Russia along the Northern Sea Route.

The first in the history of the power plant refueling, that is, the replacement of spent nuclear fuel with fresh one, is planned to begin before 2024. The manufacturer of nuclear fuel for all Russian nuclear icebreakers, as well as the Akademik Lomonosov FNPP, is Machinery Manufacturing Plant, Joint-Stock Company (MSZ JSC), a company of Rosatom Fuel Company TVEL that is based in Elektrostal, Moscow Region.

The FNPP includes two KLT-40S reactors of the icebreaking type. Unlike convenient ground-based large reactors (that require partial replacement of fuel rods once every 12-18 months), in the case of these reactors, the refueling takes place once every few years and includes unloading of the entire reactor core and loading of fresh fuel into the reactor.

The cores of KLT-40 reactors of the Akademik Lomonosov floating power unit have a number of advantages compared to the reference ones: a cassette core was used for the first time in the history of the unit, which made it possible to increase the fuel energy resource to 3-3.5 years between refuelings, and also reduce the fuel component of the electricity cost by one and a half times. The FNPP operating experience formed the basis for the designs of reactors for nuclear icebreakers of the newest series 22220. Three such icebreakers have been launched by now.

For the first time the power units of the Akademik Lomonosov floating nuclear power plant were connected to the grid in December 2019, and put into commercial operation in May 2020. The supply of nuclear fuel from Elektrostal to Pevek and its loading into the second reactor is planned for 2024. The total power of the Akademik Lomonosov FNPP, supplied to the coastal grid of Pevek without thermal energy consumption on shore, is about 76 MW, being about 44 MW in the maximum thermal power supply mode. The FNPP generated 194 million kWh according to the results of 2023. The population of Pevek is just a little more than 4 thousand, while the FNPP has a potential for supplying electricity to a city with a population of up to 100 thousand people. After the FNPP commissioning two goals were achieved. These include first of all the replacement of the retiring capacities of the Bilibino NPP, which has been operating since 1974, as well as the Chaunskaya TPP, which has already been operating for more than 70 years. Secondly, energy is supplied to the main mining companies in western Chukotka in the Chaun-Bilibino energy hub a large ore and metal cluster, including gold mining companies and projects related to the development of the Baimsk ore zone. In September 2023, a 110 kilovolt power transmission line with a length of 490 kilometers was put into operation, connecting the towns of Pevek and Bilibino. The line increased the reliability of energy supply from the FNPP to both Bilibino consumers and mining companies, the largest of which is the Baimsky GOK. The comprehensive development of the Russian Arctic is a national strategic priority. To increase the NSR traffic is of paramount importance for accomplishment of the tasks set in the field of cargo shipping. This logistics corridor is being developed due regular freight voyages, construction of new nuclear-powered icebreakers and modernization of the relevant infrastructure. Rosatom companies are actively involved in this work. Rosatom Fuel Company TVEL (Rosatom Fuel Division) includes companies fabricating nuclear fuel, converting and enriching uranium, manufacturing gas centrifuges, conducting researches and producing designs. As the only nuclear fuel supplier to Russian NPPs, TVEL supplies fuel for a total of 75 power reactors in 15 countries, for research reactors in nine countries, as well as for propulsion reactors of the Russian nuclear fleet. Every sixth power reactor in the world runs on TVEL fuel. Rosatom Fuel Division is the world’s largest producer of enriched uranium and the leader on the global stable isotope market. The Fuel Division is actively developing new businesses in chemistry, metallurgy, energy storage technologies, 3D printing, digital products, and decommissioning of nuclear facilities. TVEL also includes Rosatom integrators for additive technologies and electricity storage systems. Rosenergoatom, Joint-Stock Company is part of Rosatom Electric Power Division and one of the largest companies in the industry acting as an operator of nuclear power plants. It includes, as its branches, 11 operating NPPs, including the FNPP, the Scientific and Technical Center for Emergency Operations at NPPs, Design and Engineering as well as Technological companies. In total, 37 power units with a total installed capacity of over 29.5 GW are in operation at 11 nuclear power plants in Russia. Machinery Manufacturing Plant, Joint-Stock Company (MSZ JSC, Elektrostal) is one of the world’s largest manufacturers of fuel for nuclear power plants. The company produces fuel assemblies for VVER-440, VVER-1000, RBMK-1000, BN-600,800, VK-50, EGP-6; powders and fuel pellets intended for supply to foreign customers. It also produces nuclear fuel for research reactors. The plant belongs to the TVEL Fuel Company of Rosatom.

Rosatom obtained a license for the first land-based SMR in Russia

On April 21, Rosenergoatom obtained a license issued by Rostekhnadzor to construct the Yakutsk land-based SMR in the Ust-Yansky District of the Republic of Sakha (Yakutia).

ROSATOM and FEDC agree to cooperate in the construction of Russia's first onshore SNPP

ROSATOM and FEDC have signed a cooperation agreement to build Russia's first onshore SNPP in Yakutia.

Rosatom develops nuclear fuel for modernized floating power units

Rosatom has completed the development of nuclear fuel for the RITM-200S small modular reactor designed for the upgraded floating power units.

The widest-ever global coral crisis will hit within weeks, scientists say

The world’s coral reefs are in the throes of a global bleaching event caused by extraordinary ocean temperatures, the National Oceanic and Atmospheric Administration and international partners announced Monday.

It is the fourth such global event on record and is expected to affect more reefs than any other. Bleaching occurs when corals become so stressed that they lose the symbiotic algae they need to survive. Bleached corals can recover, but if the water surrounding them is too hot for too long, they die.

Coral reefs are vital ecosystems: limestone cradles of marine life that nurture an estimated quarter of ocean species at some point during their life cycles, support fish that provide protein for millions of people and protect coasts from storms.

The economic value of the world’s coral reefs has been estimated at $2.7 trillion annually.

For the last year, ocean temperatures have been off the charts.

“This is scary, because coral reefs are so important,” said Derek Manzello, coordinator of NOAA’s Coral Reef Watch program, which monitors and predicts bleaching events.

The news is the latest example of climate scientists’ alarming predictions coming to pass as the planet heats. Despite decades of warnings from scientists and pledges from leaders, nations are burning more fossil fuels than ever, and greenhouse gas emissions continue to rise.

Substantial coral death has been confirmed around Florida and the Caribbean, particularly among staghorn and elk horn species, but scientists say it’s too soon to estimate what the extent of global mortality will be.

To determine a global bleaching event, NOAA and the group of global partners, the International Coral Reef Initiative, use a combination of sea surface temperatures and evidence from reefs. By their criteria, all three ocean basins that host coral reefs – the Pacific, Indian and Atlantic – must experience bleaching within 365 days, and at least 12% of the reefs in each basin must be subjected to temperatures that cause bleaching.

Currently, more than 54% of the world’s coral area has experienced bleaching-level heat stress in the past year, and that number is increasing about 1% per week, Manzello said.

He added that within a week or two, “this event is likely to be the most spatially extensive global bleaching event on record.”

Each of the three previous global bleaching events has been worse than the last. During the first, in 1998, 20% of the world’s reef areas suffered bleaching-level heat stress. In 2010, it was 35%. The third spanned 2014 to 2017 and affected 56% of reefs.

The current event is expected to be shorter-lived, Manzello said, because El Nino, a natural climate pattern associated with warmer oceans, is weakening, and forecasters predict a cooler La Nina period to take hold by the end of the year.

Bleaching has been confirmed in 54 countries, territories and local economies, as far apart as Florida, Saudi Arabia and Fiji. The Great Barrier Reef in Australia is suffering what appears to be its most severe bleaching event; about one-third of the reefs surveyed by air showed a prevalence of very high or extreme bleaching, and at least three-quarters showed some bleaching.

“I do get depressed sometimes, because the feeling is like, ‘My God, this is happening,’” said Ove Hoegh-Guldberg, a professor of marine studies at the University of Queensland who published early predictions about how global warming would be catastrophic for coral reefs.

“Now we’re at the point where we’re in the disaster movie,” he said.

The most recent confirmation of widespread bleaching, prompting Monday’s announcement, came from the western Indian Ocean, including Tanzania, Kenya, Mauritius, Seychelles and off the western coast of Indonesia.

Swaleh Aboud, a coral reef scientist at CORDIO East Africa, a research and conservation nonprofit group based in Kenya and focused on the Indian Ocean, said coral species that are known to be thermally resistant are bleaching, as are reefs in a cooler area considered to be a climate refuge.

Recently he visited a fishing community in Kenya called Kuruwitu that has worked to revive its reef. Many of the restored coral colonies had turned ghostly white. Others were pale, apparently on their way.

“Urgent global action is necessary to reduce future bleaching events, primarily driven by carbon emissions,” Aboud said.

Scientists are still learning about corals’ ability to adapt to climate change. Efforts are underway to breed coral that tolerate higher temperatures. In a few places, including Australia and Japan, coral appear to be migrating poleward, beginning to occupy new places. But scientists say a variety of factors, such as how much light penetrates the water and the topography of the sea floor, make such migration limited or unlikely in much of the world. Plus there’s the problem of ocean acidification; as seawater absorbs carbon dioxide from the atmosphere, it becomes more acidic, making it harder for coral to build and maintain reefs.

Hoegh-Guldberg, who has studied the impact of climate change on coral reefs for more than three decades, was an author of a 2018 report from the Intergovernmental Panel on Climate Change that found the world would lose the vast majority of its coral reefs at 1.5 degrees Celsius of warming and virtually all at 2 degrees. Current pledges by nations put the Earth on track for about 2.5 degrees by 2100. Still, he has not lost hope.

“I think we will solve the problem if we get up and fight to solve the problem,” Hoegh-Guldberg said. “If we continue to pay lip service but not get on with the solutions, then we’re kidding ourselves.”

This article originally appeared in The New York Times .

Traveling the "The Road to 10G" in the Pacific Northwest

I was a young guy fresh out of the Marine Corps when I took a job in my wife’s hometown of Atlanta as an installer with a cable company.