Nautilus Under Sea, Mexico
9.0 Superb - Nitrox available
- Jacuzzi / Hot Tub
- En-Suite bathrooms
“This was our second trip on this boat and we have been 100% satisfied both times.”
Highlights
The latest addition to the Nautilus fleet in Mexico, the 27m Nautilus Under Sea offers divers spectacular dive tours to the Socorro Islands in Mexico. An ex-research vessel with her claims to fame, including being the support boat for the James Bond Movie "License to Kill" and a Deep Rover mission with Dr. Silvia Earle, as well as many research and photography missions, the former Under Sea Hunter, has now re-located to Mexico. She caters to 19 guests in 9 en-suite, air-conditioned cabins. The Undersea Hunter also offers plenty of room for relaxation, with a comfortable lounge and dining area and a large sun deck with loungers.
The dive deck offers ample space for kitting up and gear storage, as well as camera set-up and personal camera storage areas. The Nautilus Under Sea offers an amazing destination - the Socorro Islands. Diving the Socorro Islands, divers will come face to face with Giant Pacific Mantas, known as the friendliest mantas in the world! Also, there are sightings of up to 10 different kinds of sharks, dolphins, whale sharks, hammerheads, and humpback whales. Nautilus Under Sea offers 6-day trips with a pick-up in San Diego and leaving from Ensenada from July to November.
Don’t miss out on these amazing trips. Book online today to start your adventure.
Choose your departure date
Included: Drinking Water, Soft drinks, Tea & Coffee, Welcome Cocktails, Full-Board Meal Plan (All meals), Snacks, Special Dinner, Diving Package, Kayaks, Stand Up Paddleboard, Cabin Towels, Complimentary Toiletries, Deck Towels.
Required Extras: 5% VAT, National Park Fees ($100-192 / day), Port Fees ($35).
Optional Extras: Gratuities, Airport Transfer, Hotel Transfer, Alcoholic Beverages, Nitrox, Nitrox Course, Private Dive Guide, Rental Gear, Scuba Diving Courses, WiFi internet.
Book now, pay later: You can easily place your booking online. We will then hold the spaces for you and you can confirm with a payment later.
* Extra fees are shown per person.
Pay by bank transfer or online with
Drawings & Vessel Layouts
Cabin Types
Nautilus Under Sea Reviews
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- 9.0 Superb
- Vessel 8.3
- Crew 9.1
- Food 9.5
- Diving 9.3
- Value 8.7
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- 10 Exceptional
- Andrea R
-
Mexico
It was incredible!
The entire crew worked incredibly well together and created such a fun, welcoming, and professional atmosphere onboard. We had an amazing experience onboard from beginning to end!
- Recommended for
- Marine life. Landscapes. Crew and people.
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- 10 Exceptional
- Philip K
-
Germany
Very friendly giant mantas
great islands great sea creatures great ship great crew great adventure
- Recommended for
- Giant Mantas. Hammerhead sharks. Dolphins.
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- 10 Exceptional
- Derek M
-
United States
Incredible week - go here to see the BIG stuff!
Had an awesome week! The best pelagic big stuff diving I've had anywhere in the world, mantas on every dive, hammerheads, close encounters with dolphins, tons of sharks and humpback whale watching from the surface. The crew was great, and were willing to take us on a launch between dives to go snorkeling with a school of false killer whales. The captain coordinated with other boats so that we were the only boat at Roca Partida (having multiple boats would have reduced our dives there).
- Recommended for
- Saw tons of pelagics and lots of fish life!. Awesome crew, they worked hard and put us in the best position for good diving.. Great people on the boat and time to share stories..
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- 9.2 Superb
- Ernesto R
- United States
Dive of a lifetime.
Some of the best diving I've ever done. Great staff with loads of knowledge. Calm seas. All types of sharks. Ah the whale shark tried to kiss me. If you see dolphins, instead of pointing a camera at them, play with them. Spin and flip. They'll join you.
- Recommended for
- Captain beto. Bati dive guide. Helpful staff.
-
- 9.2 Superb
- Bruce P
-
Canada
Excellent
Diving trip done in August 2025. We really enjoyed our time on the Nautilus Undersea. Crew was amazing and worked very hard at making we were happy and comfortable. Safety of guest was taken very seriously. Well organized. Swimming with Whale Sharks was great. We did one night dive and it was the best night dive we have ever done so far. Boat is a bit old but we were comfortable. No complaints at all. We are already planning our next dive trip in Socorro with them.
- Recommended for
- The crew. Diving. Food.
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- 10 Exceptional
- Bruno I
-
Switzerland
unforgettable experience
The underwater world has surpassed everything seen so far. The crew on the boat was super friendly, helpful and took care of the well-being of the guests. An all-round successful trip. Come back on this boat, the number of guests is ideal, so you don't get in each other's way under water.
- Recommended for
- Underwater world, food, service from the crew
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- 9.6 Exceptional
- Suzanne I
- United States
Sea lions & whale sharks in the Sea of Cortez!
I just returned from an incredible week in the Sea of Cortez aboard the Nautilus Undersea. The diving was just incredible and definitive trip highlights were diving with the sea lions and snorkeling and swimming with the whale sharks. The boat crew were extremely friendly and worked nonstop and we had 3 amazing dive guides throughout the week. We learned quite a bit about the Sea of Cortez through various nightly presentations on board and also had fun swimming and kayaking during surface intervals. I can’t say enough about our chef as all the meals were fantastic and our hostess was so friendly and always smiling. What an incredible week!
- Recommended for
- Incredible diving with sea lions. Snorkeling and swimming with whale sharks. Very friendly crew.
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- 9.6 Exceptional
- Laurie T
- United States
Seahunter in August
Diving in the Sea of Cortez was beautiful at the end of August. It was very hot in the area and the boat’s AC worked well. The water was very warm and there were hundreds of fish to see. We were on the Seahunter and the boat is very spacious and comfortable. There is plenty of space and storage in the rooms. The dive deck is large with a big charging table. The crew was very helpful and we had wonderful dives.
- Recommended for
- The diving. The boat and room. The crew.
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- 8.0 Very good
- MARK E
-
United Kingdom
A pretty unique experience
The dive guides are very good, especially Rodolfo. They spot the sharks, mantas and dolphins usually before the group see's them. The food was also good, with no complaints of any illnesses. The boat and crew has a good attitude to safety and give some quite lengthy but essential safety briefings. My 2nd trip to Socorro, but hopefully there will be many more to come!
- Recommended for
- Wild dolphins that are tame and are not scared of divers. Manta's which love to hang around for most of the dive and interact with divers. Uncrowded dive sites with hardly any other dive boats around.
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- 8.4 Very good
- Florence D
-
France
Intense dives in a very friendly atmosphere.
Great week - the day of watching and swimming with the whale sharks was awesome! We saw several of them and to be so close to them was magical! The dives where the sea lions came to watch US! 😉
- Recommended for
- The attentive crew. Food. The general usability.
