Nautilus Under Sea Liveaboard
Full service trip planning,
by divers for divers
Our experts will support
you every step of the way - 24/7
Lowest possible price,
our service is 100% free
Trip dates, price & live availability
Cabins

Premium Suite Upper Deck
Air Conditioning (AC)
Fan Ventilator
TV
Wifi
Toilet
Shower
Bathtub
Hair Dryer
Safe
Refrigerator

Stateroom Lower Deck
Air Conditioning (AC)
Fan Ventilator
TV
Wifi
Toilet
Shower
Bathtub
Hair Dryer
Safe
Refrigerator

Triple Stateroom Main Deck
Air Conditioning (AC)
Fan Ventilator
TV
Wifi
Toilet
Shower
Bathtub
Hair Dryer
Safe
Refrigerator
Features & facilities
Boat features & facilities
Large diving deck
Spacious sundeck with ample seatings
Multi-media entertainment center
Large-deck mountable Pro-Lab with a self-contained movie/video
Camera workstation
SAT-COM telephone access available upon request
Large diving deck
Spacious sundeck with ample seatings
Multi-media entertainment center
Large-deck mountable Pro-Lab with a self-contained movie/video
Camera workstation
SAT-COM telephone access available upon request
Internet via WI-FI
Dive features & facilities
3 powerful 24-foot skiffs which can receive up to 9 divers.
Full rebreather support
Tri-mix support with helium
Bail-out and rebreather cylinders
Support for all types of totally closed-circuit rebreathers (CCR)
Scrubber material and high-pressure oxygen
3 powerful 24-foot skiffs which can receive up to 9 divers.
Full rebreather support
Tri-mix support with helium
Bail-out and rebreather cylinders
Support for all types of totally closed-circuit rebreathers (CCR)
Scrubber material and high-pressure oxygen
All meals & non-alcoholic drinks included
Important Note: Prices listed below exclude 5% Tax
Nautilus Under Sea Liveaboard Locations
The trips to Socorro start and end in Cabo San Lucas, Mexico.
Nautilus Under Sea Liveaboard Dive Overview
Huge manta rays, sharks, and humpback whales are some of Socorros underwater stars.
[Read More: Socorro Dive Travel Guide]
Accommodation Overview
- Premium Suites - Emerald
- A large premium suite on the sun deck can be configured into two full beds or one large bed. A flat-screen TV, multiple windows, ensuite, plenty of storage space, individually-controlled air conditioning, and easy access to the hot tub.

- ADA Compatible Stateroom - Rosario
- Adjacent to the dive deck. Wheelchair friendly. Twin beds. Huge window! Ensuite with private shower and individually-controlled air conditioning.

- Staterooms - A, B, C, D, E & F
- Lower deck. Upper and lower beds. Configuration varies between the 6 staterooms. Ensuites with private showers and individually controlled air conditioning.

- Triple Stateroom
- Triple-Main deck. 2 bunk beds, with 1 of the bunks for extra storage. Ensuite with private shower and individually-controlled air conditioning.


Ensuite Bathroom




Important Note: Prices listed below exclude 5% Tax
Itineraries
Itinerary 1: Socorro Island - Giant Mantas, Sharks, and Dolphins
Itinerary 1: Socorro Island - Giant Mantas, Sharks, and Dolphins
Itinerary 2: Mobula and Orca adventures
Itinerary 2: Mobula and Orca adventures
Itinerary 3: Ultimate Whale Sharks in the Sea of Cortez
Itinerary 3: Ultimate Whale Sharks in the Sea of Cortez
Itinerary 4: Sea of Cortez 5 Night Get-Away
Itinerary 4: Sea of Cortez 5 Night Get-Away
Itinerary 5: Sea of Cortez 7 Night Classic
Itinerary 5: Sea of Cortez 7 Night Classic
Itinerary 6: Sea of Cortez La Paz - Loreto Great Circle
Itinerary 6: Sea of Cortez La Paz - Loreto Great Circle
Itinerary 7: Mexico Sardine Run - Magdalena Bay
Itinerary 7: Mexico Sardine Run - Magdalena Bay
Itinerary 8: Ultimate Combo - Orcas, Mobulas, Whale Sharks
Itinerary 8: Ultimate Combo - Orcas, Mobulas, Whale Sharks
Itinerary 9: Socorro Island - Giant Mantas, Sharks, and Dolphins
Itinerary 9: Socorro Island - Giant Mantas, Sharks, and Dolphins
Itinerary 10: Orcas and Mobulas
Itinerary 10: Orcas and Mobulas
Itinerary 11: Whale Shark Ultimate in the Sea of Cortez
Itinerary 11: Whale Shark Ultimate in the Sea of Cortez
Itinerary 12: Mobula rays, orcas and whale shark ultimate combo
Itinerary 12: Mobula rays, orcas and whale shark ultimate combo
Itinerary 13: Sea of Cortez 6 Night Get-Away
Itinerary 13: Sea of Cortez 6 Night Get-Away
Itinerary 14: 7-Night Expedition - Sea of Cortez Diving
Itinerary 14: 7-Night Expedition - Sea of Cortez Diving
Itinerary 15: Mexico Sardine Run - Magdalena Bay
Itinerary 15: Mexico Sardine Run - Magdalena Bay
More information
Practical information
Time Zone
UTC-6
Local Currency
Mexican Peso (MXN)
Language
English & Spanish
Payment methods
Cash
Boat specifications
Year Built: 1968
Length: 105 feet
Beam:24 feet
Construction Material:Steel with teak deck
Engines: Twin Caterpillar 240 HP
Tenders: One 25ft. heavy-duty fiberglass dive boat. One 32 ft. custom high-speed aluminum dive skiff.
Generators: Two 65kW + 1 emergency genset
Voltage: 110/208 VAC 12-24 VDC
ISM safety certified audited by Bureau Veritas, VSAT, Satelite Phone
Compressors: 2 x water cooled Coltri MC-30
Passengers: 18
Cabins: 9
Nautilus Under Sea Liveaboard Reviews
Merrill McCauley
I went on the Nautilus Under Sea to Guadalupe Island on a 5-day trip to dive with the white sharks and it was an amazing trip! The Nautilus crew were super friendly and professional and were all about safety, making for a really enjoyable trip! The food on board was great and you never went hungry, they did nice interpretive presentations about the sharks in the evenings and were very passionate about shark conservation, which was nice. The rooms were clean and comfy, with nice clean bathrooms and good beds so you slept well on the trip. They have two underwater cages and one surface cage and they rotate you around so you can pretty much be in the water in one of the cages at all times if you wanted to, giving you ample opportunity to see the sharks and get some great pictures! They would yell out "shark!" every time a shark came by which was pretty fun and got everyone pumped! You are pretty much guaranteed to see sharks every day, there wasn't really even an hour that went by when there wasn't at least one shark circling the boat. It's a really cool trip to go on, definitely should be on your bucket list and these guys are the real deal, very professional, highly recommend!
Read MoreMerrill McCauley
I went on the Nautilus Under Sea to Guadalupe Island on a 5-day trip to dive with the white sharks and it was an amazing trip! The Nautilus crew were super friendly and professional and were all about safety, making for a really enjoyable trip! The food on board was great and you never went hungry, they did nice interpretive presentations about the sharks in the evenings and were very passionate about shark conservation, which was nice. The rooms were clean and comfy, with nice clean bathrooms and good beds so you slept well on the trip. They have two underwater cages and one surface cage and they rotate you around so you can pretty much be in the water in one of the cages at all times if you wanted to, giving you ample opportunity to see the sharks and get some great pictures! They would yell out "shark!" every time a shark came by which was pretty fun and got everyone pumped! You are pretty much guaranteed to see sharks every day, there wasn't really even an hour that went by when there wasn't at least one shark circling the boat. It's a really cool trip to go on, definitely should be on your bucket list and these guys are the real deal, very professional, highly recommend!
Read MoreScubaBadger
Amazing trip to the Revillagigedo Islands! Staff aboard the Nautilus Under Sea was amazing, as usual. Great food and experience on the boat. Occasional rough seas did not stop them from taking great care of the guests and their camera gear while diving. We saw an amazing diversity of marine life - the whale shark, many other shark species (galapagos, silky, silvertip, white tip, a tiger, etc), dolphins, and of course the beautiful mantas!I also really enjoyed the marine life lectures in the evenings. It was my second trip with Nautilus liveaboards (went to Guadalupe in 2015 aboard the Explorer) and I would definitely return to do a third. Bluewater's photo guide, Erik Lukas, was fabulous also. He took a lot of time to help the guests, regardless of experience or whether they had larger mirrorless/DSLR rigs or people with smaller point and shoot setups. His nightly lectures and photo review sessions were really informative. I felt like I had a decent amount of experience going in, but it was great to learn a ton of new things from a true professional! As always, the staff at Bluewater Travel was very helpful in making arrangements for the trip and answering the many questions we had beforehand. Thanks again for a great trip!
Read MoreScubaBadger
Amazing trip to the Revillagigedo Islands! Staff aboard the Nautilus Under Sea was amazing, as usual. Great food and experience on the boat. Occasional rough seas did not stop them from taking great care of the guests and their camera gear while diving. We saw an amazing diversity of marine life - the whale shark, many other shark species (galapagos, silky, silvertip, white tip, a tiger, etc), dolphins, and of course the beautiful mantas!I also really enjoyed the marine life lectures in the evenings. It was my second trip with Nautilus liveaboards (went to Guadalupe in 2015 aboard the Explorer) and I would definitely return to do a third. Bluewater's photo guide, Erik Lukas, was fabulous also. He took a lot of time to help the guests, regardless of experience or whether they had larger mirrorless/DSLR rigs or people with smaller point and shoot setups. His nightly lectures and photo review sessions were really informative. I felt like I had a decent amount of experience going in, but it was great to learn a ton of new things from a true professional! As always, the staff at Bluewater Travel was very helpful in making arrangements for the trip and answering the many questions we had beforehand. Thanks again for a great trip!
Read Moremilkopals
Nautilus Undersea crew is so nice, diving logistics are smooth, and the food is fantastic. The water is colder (68-72F 2024 late June/early July). We were in drysuits and glad we did. The boat has HP100 steel tanks for extra which is a nice bonus for drysuit weighting! The boat is on the older side and can tell its age. I like that there are only 16 divers, so we get to know everyone, and it is not chaotic. We saw many mantas and sharks (white tip/silver tip), a few hammers and dolphins, and lots of fish. We are lucky that the current is not strong and sea is mostly calm :)
Read Moremilkopals
Nautilus Undersea crew is so nice, diving logistics are smooth, and the food is fantastic. The water is colder (68-72F 2024 late June/early July). We were in drysuits and glad we did. The boat has HP100 steel tanks for extra which is a nice bonus for drysuit weighting! The boat is on the older side and can tell its age. I like that there are only 16 divers, so we get to know everyone, and it is not chaotic. We saw many mantas and sharks (white tip/silver tip), a few hammers and dolphins, and lots of fish. We are lucky that the current is not strong and sea is mostly calm :)
Read MoreFranhum
We loved our time on the Nautilus around the Socorro Islands. It was a trip of a lifetime for us. Wonderful team, amazing dives and we were well looked after in between each dive. The destination is very remote so you feel I like you are on a real adventure.
Read MoreFranhum
We loved our time on the Nautilus around the Socorro Islands. It was a trip of a lifetime for us. Wonderful team, amazing dives and we were well looked after in between each dive. The destination is very remote so you feel I like you are on a real adventure.
Read More

































