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Nautilus Undersea (248 Departures)

from 1403 GBP
  • Nautilus_Undersea
  • Nautilus_Undersea_1
  • Nautilus_Undersea_Lounge
  • Nautilus_Undersea_Dining

The UnderSea first entered service in 1968 as the personal submarine tender to Dr. Perry of Perry Oceanographic. Over the years, sturdy and dependable vessel became one of the most renowned dive boats in the world, famously known as the Undersea Hunter during its expeditions to Cocos Island and appearances in IMAX adventures across the South Pacific. The ship later underwent an extensive shipyard refit, which included stretching the hull to 105 feet, adding a new superstructure and extended sun deck, and equipping it with a bulbous bow and advanced stability system, ensuring both comfort and performance for modern expeditions.

DEPARTURE

6 Mar 2026
Socorro Island Giant Mantas, Sharks, and Dolphins
9 days/8 nights returning 14 Mar 2026 View Route Itinerary
from 3075 GBP
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1 Apr 2026
Socorro Island Giant Mantas, Sharks, and Dolphins
9 days/8 nights returning 9 Apr 2026 View Route Itinerary
from 3075 GBP
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9 Apr 2026
Socorro Island Giant Mantas, Sharks, and Dolphins
9 days/8 nights returning 17 Apr 2026 View Route Itinerary
from 2771 GBP
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17 Apr 2026
Socorro Island Giant Mantas, Sharks, and Dolphins
9 days/8 nights returning 25 Apr 2026 View Route Itinerary
from 2543 GBP
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3 May 2026
Socorro Island Giant Mantas, Sharks, and Dolphins
9 days/8 nights returning 11 May 2026 View Route Itinerary
from 2543 GBP
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19 May 2026
Socorro Island Giant Mantas, Sharks, and Dolphins
9 days/8 nights returning 27 May 2026 View Route Itinerary
from 2543 GBP
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27 May 2026
Mobula and Orca Adventures
5 days/4 nights returning 31 May 2026 View Route Itinerary
from 1783 GBP
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31 May 2026
Socorro Island Giant Mantas, Sharks, and Dolphins
9 days/8 nights returning 8 Jun 2026 View Route Itinerary
from 2467 GBP
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16 Jun 2026
Socorro Island Giant Mantas, Sharks, and Dolphins
9 days/8 nights returning 24 Jun 2026 View Route Itinerary
from 2467 GBP
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24 Jun 2026
Socorro Island Giant Mantas, Sharks, and Dolphins
12 days/11 nights returning 5 Jul 2026 View Route Itinerary
from 2771 GBP
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5 Jul 2026
Mobula and Orca Adventures
8 days/7 nights returning 12 Jul 2026 View Route Itinerary
from 2048 GBP
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12 Jul 2026
Mobula and Orca Adventures
8 days/7 nights returning 19 Jul 2026 View Route Itinerary
from 2048 GBP
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19 Jul 2026
Mobula and Orca Adventures
11 days/10 nights returning 29 Jul 2026 View Route Itinerary
from 3037 GBP
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8 Aug 2026
Ultimate Combo - Orcas and Whale Sharks 11 days / 10 nights
8 days/7 nights returning 15 Aug 2026 View Route Itinerary
from 2087 GBP
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25 Aug 2026
Sea of Cortez 5 Night Get-Away
6 days/5 nights returning 30 Aug 2026 View Route Itinerary
from 1403 GBP
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6 Sep 2026
Sea of Cortez 5 Night Get-Away
8 days/7 nights returning 13 Sep 2026 View Route Itinerary
from 1935 GBP
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13 Sep 2026
Sea of Cortez 5 Night Get-Away
7 days/6 nights returning 19 Sep 2026 View Route Itinerary
from 1631 GBP
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26 Sep 2026
Ultimate Combo - Orcas and Whale Sharks 11 days / 10 nights
8 days/7 nights returning 3 Oct 2026 View Route Itinerary
from 2087 GBP
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3 Oct 2026
Ultimate Combo - Orcas and Whale Sharks 11 days / 10 nights
8 days/7 nights returning 10 Oct 2026 View Route Itinerary
from 2087 GBP
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10 Oct 2026
Sea of Cortez 5 Night Get-Away
8 days/7 nights returning 17 Oct 2026 View Route Itinerary
from 2011 GBP
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17 Oct 2026
Mexico Sardine Run / Magdalena Bay 8 days / 7 nights
7 days/6 nights returning 23 Oct 2026 View Route Itinerary
from 2429 GBP
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23 Oct 2026
Mexico Sardine Run / Magdalena Bay 8 days / 7 nights
7 days/6 nights returning 29 Oct 2026 View Route Itinerary
from 2429 GBP
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2 Dec 2026
Socorro Island Giant Mantas, Sharks, and Dolphins
9 days/8 nights returning 10 Dec 2026 View Route Itinerary
from 3759 GBP
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18 Dec 2026
Socorro Island Giant Mantas, Sharks, and Dolphins
9 days/8 nights returning 26 Dec 2026 View Route Itinerary
from 2619 GBP
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26 Dec 2026
Socorro Island Giant Mantas, Sharks, and Dolphins
9 days/8 nights returning 3 Jan 2027 View Route Itinerary
from 2619 GBP
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11 Jan 2027
Socorro Island Giant Mantas, Sharks, and Dolphins
9 days/8 nights returning 19 Jan 2027 View Route Itinerary
from 2581 GBP
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12 Feb 2027
Socorro Island Giant Mantas, Sharks, and Dolphins
9 days/8 nights returning 20 Feb 2027 View Route Itinerary
from 2809 GBP
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28 Feb 2027
Socorro Island Giant Mantas, Sharks, and Dolphins
9 days/8 nights returning 8 Mar 2027 View Route Itinerary
from 2809 GBP
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21 Apr 2027
Socorro Island Giant Mantas, Sharks, and Dolphins
9 days/8 nights returning 29 Apr 2027 View Route Itinerary
from 2581 GBP
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29 Apr 2027
Socorro Island Giant Mantas, Sharks, and Dolphins
9 days/8 nights returning 7 May 2027 View Route Itinerary
from 2581 GBP
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TRIP INCLUSIONS

  • Full Board Accommodation
  • Non-alcoholic Beverages and Snacks
  • Weight and Weight Belts
  • Aluminum 80’s and Air
  • Daily Room Service
  • In-water Dive Guide
  • End of Trip Slideshow DVD
  • Use of Kayak and Stand Up Paddle Boards

TRIP EXCLUSIONS

  • Port Fee
  • Airport Transfers
  • Crew Gratuities
  • Bar
  • Dive Gear Rentals
  • Mexican Taxes
  • Wi-Fi Access On-board
  • Nitrox
  • Gift Shop Purchases
Vessel Specifications
Launched: 1968
Rebuilt: 2017
Length: 105 ft. long
Safety: ISM safety certified
Staterooms: 9 en-suite staterooms and suites
Guest Capacity: 19 guests
Number of Crew: 9 crew
Communication: Internet access and satellite phone
Water Makers Capacity: High capacity
Hot Tub: Freshwater
Bar: Fully-stocked extensive bar (single malts, micro brews, a great selection of wine)


Diving Facilities
Tank Fills: Air fills, nitrox, rebreather friendly
Tenders for Diving: Available onboard
Shaded Diving Area: Available onboard
Rinse Hoses: Available onboard
Sidemount Diving: Available onboard
DIN Adaptors: Available onboard
Dive Deck: Available onboard


Equipment Information
Nitrox: 120 USD
Steel 95 cf Cylinder: 42 USD
Go-pro Camera: 150 USD
Wetsuit, BCD, Regulator: 200 USD
BCD, Regulator, Dive Computer: 200 USD
Fins, Booties, Hood/Mask: 75 USD
Full Gear: 360 USD - Wetsuit, BCD, Regulator, Computer, Booties, Hood, Fins, Snorkel and Mask
Wetsuit: 80 USD
BCD: 80 USD
Regulator: 80 USD
Dive Computer: 60 USD
Fins: 35 USD
Booties: 35 USD
Premium Avanti Quattro+ & Booties: 55 USD
Hood: 15 USD
Mask: 15 USD
Premium MARES Liquid Skin Mask: 40 USD
Snorkel: 20 USD
Hooded Vest: 35 USD
Dive Lights: 35 USD
Zorb: 7.63 USD per pound
Oxygen Fills: 100 USD / 20 USD each additional day more than 5 day
Oxygen Rebreather Cylinder: 50 USD / 10 USD each additional day
Diluent Rebreather Cylinder: 50 USD / 10 USD each additional day

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