Nautilus Under Sea Liveaboard, Mexico - Booking & Reviews - Bluewater Dive Travel

Nautilus Under Sea

Nautilus Under Sea liveaboard

Destination: Mexico

Socorro (5-10 Nights) | From $330++/night

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Nautilus Under Sea Liveaboard Quick Pitch

Previously known as Undersea Hunter serving Cocos Island, Nautilus Under Sea has recently moved to the waters of Socorro to offer nothing less than an intimate and comfortable dive liveaboard vacation, that she has been long known for.


Why You'll Like Nautilus Under Sea 

  • 9 cabins for up to 18 divers
  • Full rebreather support
  • Three 24-foot skiffs for 9 divers each
  • Nitrox available
  • Free transfers
  • Photography facilities


Liveaboard Locations

The trips to Socorro start and end in Cabo San Lucas, Mexico.


Dive Overview

Huge manta rays, sharks, and humpback whales are some of Socorro’s underwater stars. 

[Read More: Socorro Dive Travel Guide]

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Types of Cabins, Amenities, and Photos

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Nautilus Under Sea Cabin Details 

  • 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.
  • Nautilus Under Sea

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

  • 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.
  • Nautilus Under Sea

Nautilus Under Sea

Ensuite Bathroom 

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General Facilities

Boat Features, Facilities, and Photos

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Nautilus Under Sea Nautilus Under Sea

Nautilus Under Sea Nautilus Under Sea


Nautilus Under Sea Boat Features

  • 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


Nautilus Under Sea Dive 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
  • All meals & non-alcoholic drinks included 

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Nautilus Under Sea Liveaboard Schedule & Rates

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Prices are per person in USD and include a 5% tax, which is often not included on other websites. Scroll down to see the full inclusions & exclusions.  Click on 'Booking Request' to see cabin options and to book.


Package Inclusions 

  • Accommodation
  • All meals (continental breakfast, breakfast, lunch, dinner, and dessert), non-alcoholic beverages, and snacks
  • Use of kayaks and stand up paddleboards (on Socorro Island trips only)
  • Weights, weight belts, aluminum 80’s and air, 
  • Daily room service, towels, 
  • In-water divemaster and end of trip slideshow DVD 
  • Onboard facilities such as the hot tub and lounge.


Package Exclusions

  • Port Fee of $65.00 USD per person 
  • Transfers between airport and hospitality suite
  • Gift shop purchases
  • Bar
  • Crew gratuities
  • Dive gear rentals
  • Nitrox is available for $20.00 USD per dive day.
  • Optional wi-fi access on board. 

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Rates & Availability

For more information on the rates and on availability email us at or call us at +1-310-915-6677 and we will gladly help you plan your dream dive vacation!

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Dive Information & Itineraries

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Socorro Itinerary Overview 

Socorro Island is part of the Revillagigedos, a group of small islands off the coast of Baja California, Mexico. Dive sites include Socorro, San Benedicto & Roca Partida but may change due to ocean conditions. Manta's behavior here is unique in the world. The 12-to-16-foot giant mantas of Socorro seek out intimate interactions with divers. They communicate with us, from locking eyes in a first contact to gently swimming just overhead to be tickled by bubbles. Sometimes they hover alongside or underneath a diver, where they often stay, curious and seemingly in want of a connection that has left more than one diver with tears of joy.

It’s one of the reasons we stay committed to the Socorro Islands (a.k.a. the Revillagigedo Archipelago), well worth the full-day motor south from Cabo San Lucas. Volcanic in origin, these islands serve as an oasis amid the Sea of Cortez, 250 miles off the Baja Peninsula coast. The raw lava flows and active volcanoes in these islands resemble the lost world of “Jurassic Park,” which seems fitting as these outpost islands, including 

Roca Partida, beckon not just to giant mantas but to a host of big animals.

Your journey will include four dives per day (subject to weather and unforeseeable circumstances)—each an opportunity to encounter resident pods of playful dolphins. You may also see up to 10 varieties of shark: schooling scalloped hammerheads, solitary giant hammerheads, Galápagos, whitetip reef, silver-tip, silky, tiger and oceanic whitetips. The list also includes whale sharks and dusky sharks and on occasion even a thresher shark.

On most days, we enjoy visibility of 70 to 100 feet. When the current picks up, the ash from these volcanic isles can rise, reducing the visibility to 30 feet. For the wide-angle experience that is big-animal diving, this isn’t ideal. But, we’re still cruising one of the most pristine underwater environments—so we then choose dives where we’re closer to the reefs and marine life such as eels, octopuses and Socorro lobsters.



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Other Information

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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


Practical Information 

  • Time Zone: UTC-6
  • Local Currency: Mexican Peso (MXN)
  • Language Spoken: English & Spanish
  • Payment Onboard: Cash

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Got Questions? Ready to Book?

Call us today at +1-310-915-6677 or email us

And let us book your dream vacation!

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Socorro Underwater Pictures

Nautilus Under Sea Bluewater Dive Travel Nautilus Under Sea Bluewater Dive Travel

Nautilus Under Sea Bluewater Dive Travel Nautilus Under Sea Bluewater Dive Travel

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Nautilus Under Sea Bluewater Dive Travel Nautilus Under Sea Bluewater Dive Travel

Nautilus Under Sea Bluewater Dive Travel Nautilus Under Sea Bluewater Dive Travel

Nautilus Under Sea Bluewater Dive Travel Nautilus Under Sea Bluewater Dive Travel 

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Reviews (3)


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.

Visited on 03/2017 - Submitted on 03/13/2021
Ventura, CA
United States

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!

Visited on 10/2018 - Submitted on 05/07/2020

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!

Visited on 12/2019 - Submitted on 01/15/2020


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