For Mary and John Nelson, a lifetime of diving and more than three decades of traveling with Aggressor Adventures® led to their biggest adventure yet—a two-month journey around the world that combined five Aggressor liveaboard experiences with ancient temples, legendary landmarks, cultural discoveries and a few unforgettable encounters along the way.
For Mary and John Nelson, adventure has always been something they do together.
Mary is a retired elementary school teacher from Ohio who spent 35 years in the classroom, including 27 years teaching fifth grade. John, a history professor at El Paso Community College, has been diving for 45 years. Their underwater journey began in 1981, when John learned to dive with his best friend and encouraged Mary to become certified as well. John learned in a quarry. Mary got a somewhat more tropical introduction, earning her certification in Key Largo at John Pennekamp Coral Reef State Park.
Their diving adventures soon grew from land-based trips into liveaboard travel. And in 1991, they took their first Aggressor trip to the Cayman Islands—a journey that would begin a relationship with Aggressor that has lasted more than three decades.
“We absolutely love Little Cayman,” Mary and John said. “Eat, sleep, dive! All inclusive. Room and board and you wake up over the reef. How can it get any better than that?”
More than 30 years later, they would find out.
The Trip of a Lifetime
The idea for their Around the World adventure began relatively simply.
Mary and John had talked about visiting destinations such as Thailand, the Maldives, the Red Sea and Indonesia. Mary had already visited Thailand in 2018, where she had the opportunity to care for elephants, and they began considering a return trip that could include Aggressor Adventures’ new Signature Lodge in Chiang Mai, Thailand.
Then the idea grew.
“If we are going that far, let’s add the Red Sea,” they thought. Then came Indonesia. And Australia.
The summer months were the only time that worked with John’s schedule as a college professor, but they discovered that some Aggressor destinations, including Thailand and the Maldives, were in dry dock during that period.
So the itinerary evolved.
One week of diving. Time on land to rest. Another week of diving. Explore the country between liveaboards.
Could they handle five dive boats?
They were going to find out.
Eleven months of planning later, the answer was waiting for them: 14 flights, five Aggressor liveaboard charters, a Nile River cruise, a Cairo tour package, a Bali island adventure, a Sydney highlights tour and four countries.
The journey would take place from May 29 through July 30, 2026.
And there was one person they knew would be essential to making it happen.
Making the Impossible Itinerary Possible
The liveaboards were booked. The adventure was taking shape. But getting two travelers around the world with flights, hotels, transfers and excursions connecting five dive trips was another matter entirely.
That’s where Aggressor Detours and Manager Bob Thompson came in.
“This trip would not happen without Bob, plain and simple,” Mary and John said.
Once their Aggressor yachts were reserved, Bob and the Aggressor Detours team took over the complicated puzzle surrounding them—coordinating airlines, hotels, transfers and the land-based adventures between dive trips.
As the departure date approached, Mary created a travel folder containing their itinerary, travel vouchers, “Know Before You Go” information for each of the Aggressor Liveaboards and the Nile Cruise, along with airline tickets for the entire journey.
She even created folders for family and friends so they could follow along from home.
“If we are out to sea and unreachable, relaxing in a hotel, or flying to our next destination,” they could know exactly where we were, Mary explained.
And then came the real test.
It worked.
Every flight was on time. Every airport transfer happened as scheduled. Every driver was waiting when they were supposed to be. Every hotel and resort exceeded expectations.
“There was never a glitch anywhere,” they said. “Bob outdid himself.”
Back Where It All Began: Cayman
The adventure began with a destination that held a special place in their history: the Cayman Islands.
Their first Aggressor experience in 1991 had been in Cayman, after they had met Aggressor crew member Dan Morrison while diving in the Virgin Islands. Morrison later became captain of the Cayman Aggressor, and the Nelsons eventually booked their first Aggressor trip.
That first journey introduced them to the liveaboard experience that would become such an important part of their lives.
Decades later, they returned aboard the Cayman Aggressor IV. Not just for one one charter, but for two back-to-back weeks of diving in the Cayman Islands!
For Mary and John, the highlight remained the same: Little Cayman. Their two-week adventure gave them the opportunity to revisit the island and experience its legendary reefs, where they enjoyed memorable encounters with Cayman’s graceful sea turtles.
And after more than 30 years of diving with Aggressor, returning to Cayman was about more than exploring the reefs—it was a chance to reconnect with a destination that has played such an important role in their diving journey.
And there was another important element to their return.
The Cayman Aggressor crew had become friends over the years, and their experience in Cayman also helped prepare them for the very different diving that lay ahead.
The crew talked to them about currents and conditions in the Red Sea and Indonesia, advice that would prove invaluable later in the journey.
Egypt: A Completely Different World
From Cayman, the Nelsons traveled to Egypt.
Their itinerary included a Cairo tour, a Nile River cruise and two separate Red Sea Aggressor adventures (the RSA4’s South and RSA5’s Deep South itineraries). It was a combination of history, culture and diving that would make Egypt one of the most memorable portions of their journey.
On land, they explored the pyramids of Giza and the Sphinx, visited the Grand Egyptian Museum, traveled along the Nile and explored the Valley of the Kings, Karnak Temple and Luxor Temple.
Mary even went inside a pyramid.
The journey eventually took them to Abu Simbel, where they saw the massive temple of Ramses II and Nefertari.
But after experiencing Egypt above water, they were ready to discover another side of the country.
Into the Red Sea
The Red Sea was unlike anything they had experienced before.
Aboard the Red Sea Aggressor IV, Mary and John encountered a completely different style of diving—including tender diving, current diving and the use of surface marker buoys.
The underwater scenery was equally different.
They were struck by the abundance of soft, colorful corals and the number of clownfish they encountered. And then came an unexpected highlight: a large manta ray gliding along the wall.
Then came the Red Sea Aggressor V.
For the Nelsons, the yacht itself became part of the experience. They described the vessel as “absolutely a gem,” with beautiful accommodations.
But the dive that stood out was one called The Caves.
The nearly 70-minute dive took them through an incredible underwater cave system, with sunlight filtering through openings above and illuminating the passages along the way. The winding route made for an exciting exploration, with the experienced dive guides leading the way through the spectacular formations.
It was a fascinating way to experience the Red Sea—and a dive they won’t soon forget.
It was the final dive of their week in the Red Sea—and a fitting way to end another extraordinary chapter.
Into the Current: Komodo
Indonesia brought yet another completely different diving experience.
The currents around Komodo can move with the force of a river, and the crew carefully checked conditions before each dive.
One morning, the surface of the ocean itself looked like a river.
The Cruise Director warned the divers that they could expect the same conditions underwater.
Mary admitted to her dive guide, Hanny, that she had never done a dive like this before.
“Stay with me,” he told her.
When they entered the water, Hanny took Mary’s hand—and didn’t let go for the entire dive.
The current carried them along the reef until they reached the end of the island, where a down current required them to work their way back and forth toward the surface.
After approximately 65 minutes, Mary and John surfaced with Hanny. To their surprise, they were the only three divers still in the water.
“It was a fantastic dive!”
The Komodo Aggressor also gave Mary a special reason to celebrate—her 70th birthday. What better way to mark seven decades than surrounded by tropical waters, incredible marine life and a crew of fellow adventurers? Celebrating this milestone in Komodo became one of the many unforgettable memories of their journey, proving that for Mary, age is no reason to slow down when there is still so much of the world left to explore.
And then there were the dragons.
Seeing Komodo dragons was another highlight of the trip, giving the Nelsons an unforgettable experience both above and below the surface.
The Mantas of Komodo
But if there was one underwater encounter that defined the entire two-month journey, it happened in Komodo.
The Cruise Director, Queenkie, returned from checking the current with exciting news:
“The mantas were home!”
The divers were dropped at the site and used reef hooks to remain in position in the current.
Then they waited.
And watched.
And watched some more.
For 50 to 60 minutes, manta rays moved through the area around them.
Mary counted eight or nine.
The Nelsons had never seen that many manta rays together.
Suspended in the blue, the giant rays reminded them of Macy’s Thanksgiving Day Parade balloons floating underwater.
It was the kind of encounter that makes a dive difficult to put into words.
When asked which moment from the entire two-month adventure they would relive, there was no hesitation.
The mantas.
Beyond the Diving
One of the things that made this journey different from a traditional liveaboard trip was what happened between the dives.
In Egypt, they explored some of the world’s most recognizable archaeological treasures.
In Indonesia, they discovered temples, traditions and a few unexpected surprises.
At Uluwatu Temple in Bali, they watched a traditional fire dance performed by dozens of men singing without musical accompaniment.
They were also warned about the temple’s resident monkeys.
Visitors were told to secure their jewelry and glasses because the monkeys were notorious thieves.
John was careful.
Until he wasn’t.
While the couple was waiting for the fire dance, a monkey approached from behind and stole John’s glasses.
Suddenly, an entire crowd was watching.
People followed the monkey. Other monkeys joined in. Phones came out to record the spectacle.
Eventually, an Indonesian woman returned with John’s glasses—slightly worse for wear—and requested a tip for their recovery.
They gladly paid.
John bought a new pair when they returned home.
Australia: One Last Adventure
The final country on their itinerary was Australia.
Mary had insisted that if they were going to travel that far, they simply had to see some of the country.
She was right.
One of their favorite experiences was the Sydney Harbour BridgeClimb, where they climbed high above Sydney Harbour with views toward the Opera House and the city.
They also toured Sydney’s beaches with their guide, Julian, who introduced them to a side of the city they hadn’t expected: there were far more beaches than they realized.
Their Australian adventure also included a visit to the Australian Zoo.
After weeks of diving, temples, ancient monuments, boats, planes and international travel, it was a fitting final chapter before their flight home on July 30.
Two Months. Four Countries. One Extraordinary Journey.
Perhaps the greatest surprise wasn’t a particular dive site, animal or landmark.
It was how smoothly everything came together.
For two months, Mary and John traveled through Cayman, Egypt, Indonesia and Australia. They boarded airplanes, liveaboards, buses, tenders and boats. They crossed oceans and continents. They explored ancient civilizations and modern cities. They dove reefs swept by currents and watched mantas hover in the blue.
And after 48 years of marriage, they discovered something else.
They could circumnavigate the world together.
They also discovered that, despite language and cultural differences, people everywhere shared something fundamental.
“People are people,” they said. “The people in every country we visited—Cayman, Egypt, Indonesia and Australia—are genuinely friendly and wanted to know about us as we wanted to know about them.”
One encounter in Egypt particularly stayed with them.
After John injured himself on the stairs getting onto a plane in Cayman, the long flight to Cairo left him struggling to walk. When they arrived in Egypt, a young man helping passengers through the airport noticed that John needed assistance.
He put the couple on his cart, helped them through visa and passport control and stayed with them until they reached baggage claim, where they met their guide.
It was their first personal interaction in Egypt.
And it exceeded their expectations.
Keep Exploring
Looking back, the Nelsons don’t describe their journey simply as a dive trip.
It was a journey stitched together across continents—from the walls of the Cayman Islands to the legendary waters of the Red Sea and the current-filled reefs of Indonesia. Between dives, they explored pyramids and temples, cruised the Nile, encountered Komodo dragons, watched fire dancers, chased a monkey thief and climbed high above Sydney Harbour.
It was two months of exploration.
Two months of discovery.
And more than three decades after their first Aggressor adventure, they still aren’t ready to stop.
Their next destination?
Possibly the Philippines to reunite with their friend Rodell from the Cayman Aggressor IV.
Or maybe Palau.
Because for Mary and John Nelson, the journey continues.
Get out there. Explore the world.
