




Nautilus Under Sea
from $1,884
Nautilus Under Sea is a premium liveaboard offering thrilling diving adventures in Mexico, featuring comfortable cabins, expert guides, and unforgettable encounters with great white sharks, manta rays, and whale sharks.



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 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
Cabin details
Premium Suite Upper Deck
Stateroom Lower Deck
Triple Stateroom Main Deck
Boat features
Boat facilities
Photo & Video Gallery
Nautilus Under Sea dates




11 May 2025 - 19 May 2025
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
2/19 spots left
from $3,459
27 May 2025 - 4 Jun 2025
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
1/19 spots left
from $3,459
12 Jun 2025 - 20 Jun 2025
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
2/19 spots left
from $3,039
6 Jul 2025 - 13 Jul 2025
(Orcas and Mobulas - limited to just 12 guests) ( Cabo San Lucas - Cabo San Lucas)
8 days7 nights
9/19 spots left
from $3,622
20 Jul 2025 - 27 Jul 2025
(Orcas and Mobulas ) ( Cabo San Lucas - La Paz)
8 days7 nights
8/19 spots left
from $2,782
27 Jul 2025 - 6 Aug 2025
(Mobula rays, orcas and whale shark ultimate combo) ( Cabo San Lucas - La Paz)
11 days10 nights
1/19 spots left
from $3,832
8 Aug 2025 - 15 Aug 2025
(Whale Shark Ultimate in the Sea of Cortez) ( Cabo San Lucas - La Paz)
8 days7 nights
5/19 spots left
from $2,829
15 Aug 2025 - 22 Aug 2025
(Whale Shark Ultimate in the Sea of Cortez) ( Cabo San Lucas - La Paz)
8 days7 nights
9/19 spots left
from $2,829
23 Aug 2025 - 30 Aug 2025
(Whale Shark Ultimate in the Sea of Cortez) ( Cabo San Lucas - La Paz)
8 days7 nights
13/19 spots left
from $2,829
20 Sep 2025 - 27 Sep 2025
(Whale Shark Ultimate in the Sea of Cortez) ( Cabo San Lucas - La Paz)
8 days7 nights
8/19 spots left
from $2,829
27 Sep 2025 - 3 Oct 2025
(Sea of Cortez - 6 Night Get-Away) ( Cabo San Lucas - La Paz)
7 days6 nights
15/19 spots left
from $2,257
11 Oct 2025 - 18 Oct 2025
(Whale Shark Ultimate in the Sea of Cortez) ( Cabo San Lucas - La Paz)
8 days7 nights
8/19 spots left
from $2,829
18 Oct 2025 - 25 Oct 2025
(Whale Shark Ultimate in the Sea of Cortez) ( Cabo San Lucas - La Paz)
8 days7 nights
2/19 spots left
from $2,829
20 Nov 2025 - 28 Nov 2025
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
5/19 spots left
from $3,564
28 Nov 2025 - 6 Dec 2025
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
1/19 spots left
from $3,984
14 Dec 2025 - 22 Dec 2025
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
1/19 spots left
from $3,564
22 Dec 2025 - 30 Dec 2025
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
7/19 spots left
from $3,564
15 Jan 2026 - 23 Jan 2026
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
5/19 spots left
from $3,512
16 Feb 2026 - 26 Feb 2026
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
11 days10 nights
1/19 spots left
from $4,299
1 Apr 2026 - 9 Apr 2026
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
10/19 spots left
from $3,827
9 Apr 2026 - 17 Apr 2026
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
19/19 spots left
from $3,827
17 Apr 2026 - 25 Apr 2026
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
19/19 spots left
from $3,512
25 Apr 2026 - 3 May 2026
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
16/19 spots left
from $3,932
3 May 2026 - 11 May 2026
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
6/19 spots left
from $3,512
11 May 2026 - 19 May 2026
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
7/19 spots left
from $3,512
19 May 2026 - 27 May 2026
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
19/19 spots left
from $3,512
27 May 2026 - 31 May 2026
(Mobulas and Orcas - 12 guest maximum) ( Cabo San Lucas - Cabo San Lucas)
5 days4 nights
4/19 spots left
from $2,462
31 May 2026 - 8 Jun 2026
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
19/19 spots left
from $3,407
16 Jun 2026 - 24 Jun 2026
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
14/19 spots left
from $3,407
24 Jun 2026 - 5 Jul 2026
(Unique Combo - Socorro, and orcas, and giant schools of mobula rays) ( Cabo San Lucas - Cabo San Lucas)
12 days11 nights
2/19 spots left
from $3,827
2 Dec 2026 - 10 Dec 2026
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
4/19 spots left
from $3,617
18 Dec 2026 - 26 Dec 2026
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
19/19 spots left
from $3,617
26 Dec 2026 - 3 Jan 2027
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
19/19 spots left
from $3,617
3 Jan 2027 - 11 Jan 2027
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
19/19 spots left
from $3,249
11 Jan 2027 - 19 Jan 2027
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
19/19 spots left
from $3,564
27 Jan 2027 - 4 Feb 2027
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
19/19 spots left
from $3,879
28 Feb 2027 - 8 Mar 2027
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
19/19 spots left
from $3,879
8 Mar 2027 - 16 Mar 2027
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
16/19 spots left
from $3,879
5 Apr 2027 - 13 Apr 2027
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
19/19 spots left
from $3,879
13 Apr 2027 - 21 Apr 2027
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
19/19 spots left
from $3,879
21 Apr 2027 - 29 Apr 2027
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
19/19 spots left
from $3,564
29 Apr 2027 - 7 May 2027
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
19/19 spots left
from $3,564
7 May 2027 - 15 May 2027
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
19/19 spots left
from $3,564
15 May 2027 - 23 May 2027
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
7/19 spots left
from $3,564
23 May 2027 - 31 May 2027
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
7/19 spots left
from $3,564
31 May 2027 - 8 Jun 2027
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
19/19 spots left
from $3,564
8 Jun 2027 - 16 Jun 2027
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
19/19 spots left
from $3,459
16 Jun 2027 - 24 Jun 2027
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
19/19 spots left
from $3,459
24 Jun 2027 - 5 Jul 2027
(Unique Combo - Socorro, and orcas, and giant schools of mobula rays) ( Cabo San Lucas - Cabo San Lucas)
12 days11 nights
14/19 spots left
from $3,879
6 Sep 2026 - 13 Sep 2026
(7-Night Expedition - Sea of cortez diving) ( Cabo San Lucas - La Paz)
8 days7 nights
17/19 spots left
from $2,672
10 Sep 2025 - 15 Sep 2025
(Sea of Cortez - 6 Night Get-Away) ( Cabo San Lucas - La Paz)
6 days5 nights
18/19 spots left
from $1,884
15 Sep 2025 - 20 Sep 2025
(Sea of Cortez - 6 Night Get-Away) ( Cabo San Lucas - La Paz)
6 days5 nights
19/19 spots left
from $1,884
11 Nov 2027 - 19 Nov 2027
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
17/19 spots left
from $3,669
27 Nov 2027 - 5 Dec 2027
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
19/19 spots left
from $3,669
13 Dec 2027 - 21 Dec 2027
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
19/19 spots left
from $3,669
21 Dec 2027 - 29 Dec 2027
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
19/19 spots left
from $3,669
29 Dec 2027 - 6 Jan 2028
(Socorro - giant mantas, sharks and dolphins) ( Cabo San Lucas - Cabo San Lucas)
9 days8 nights
19/19 spots left
from $3,669
Detailed information about the itinerary
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.
Its 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, Galpagos, 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 isnt ideal. But, were still cruising one of the most pristine underwater environmentsso we then choose dives where were closer to the reefs and marine life such as eels, octopuses and Socorro lobsters.


More information about this trip

Included
- 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 80s and air,
- Daily room service, towels,
- In-water divemaster and end of trip slideshow DVD
- Onboard facilities such as the hot tub and lounge.

Excluded
- Socorro national park fee: approx USD $195/person/day (effective Jan 1, 2025)
- 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.

Practical information
- Time Zone: UTC-6
- Local Currency: Mexican Peso (MXN)
- Language Spoken: English & Spanish
- Payment Onboard: 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
Fellow traveler's reviews






milkopals
1164 Reviews




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 :)
Franhum
1164 Reviews




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.
Merrill McCauley
1164 Reviews




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!
ScubaBadger
1164 Reviews




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!