Est. 2000  ·  25 years crafting dive holidays  ·  30+ countries, hand-picked resorts ★★★★★  Rated 5/5 on Google Mon–Thu 9–6, Fri–Sat 9–5  ·  +44 1273 921 001
Call us now

Mon–Thu 9am–6pm, Fri–Sat 9am–5pm (UK time)

Honest, expert, unbias advice.

24/7 post booking support.

Matt — travel expert

Matt

Marcus — travel expert

Marcus

Erika — travel expert

Erika

   +44 1273 921 001 or book a call for a time that suits you →
Make an enquiry

ATOL bonded flight inclusive dive holidays (or hotel only).

Cheaper than booking direct with special trade prices.

Beautifully crafted itineraries emailed within hours (or mins).

   Send an enquiry
Please wait
Liveaboard · Costa Rica

Okeanos Aggressor II, Costa Rica

The Okeanos Aggressor II liveaboard was built for comfort and stability to offer year-round diving at the remote islands of Costa Rica.

✦  See Dates & Cabins
5★ on Google — 190+ reviews Personally checked by our dive team ATOL & TTA — 100% protected
The boat

Okeanos Aggressor II, in detail

Overview of Okeanos Aggressor II

The Okeanos Aggressor II liveaboard was built for comfort and stability to offer year-round diving at the remote islands of Costa Rica. The yacht provides comfortable accommodation for 24 guests in 12 en-suite cabins. Eight deluxe staterooms are located on the lower deck, with a double lower bed and twin upper bunk-style bed. On the main deck is the master stateroom with a queen bed, and on the upper deck are two suites with two twin beds or one king bed.

On the main deck is the ship's restaurant, where delicious cuisine with a varied and plentiful menu is served. Breakfast and lunches are buffet-style, and dinner is chef-prepared and served each evening. On the top deck is the BBQ and shaded cocktail bar, perfect for unwinding with fellow guests to discuss the spectacular diving of the day. Here, you can also find comfortable loungers to do some tanning in between dives.

The Okeanos II liveaboard departs from Puntarenas, Costa Rica for the 36-hour crossing to Costa Rica. Guests can enjoy up to 21 dives at the UNESCO World Heritage site for the chance of big fish encounters like nowhere else. Aside from the incredible diving, guests will also be taken ashore to hike through the jungles of Cocos and swim in the many waterfalls.

Google ★★★★★ 5/5

Is Okeanos Aggressor II right for you?

Every trip is 100% financially protected — ATOL licence and trust account. We can add flights, hotels and tours around your liveaboard as one tailor-made booking. Speak to a Costa Rica diving expert.

Or call +44 1273 921 001 — Mon–Thu 9am–6pm, Fri–Sat 9am–5pm
Departures & cabins

Pick your month

As a fully bonded tour operator with an ATOL licence and trust account, your trip is totally financially protected. We can also include flights, hotels and tours with your liveaboard booking — speak to a Costa Rica diving holiday expert on +44 1273 921 001 to build a tailor-made tour around it.

26 Dec, 2026 10 nights
Cocos Island Adventure Puntarenas to Puntarenas · 26 Dec, 2026 – 05 Jan, 2027 See full itinerary →
Just 1 left
£4,995 per person
📷 Deluxe Stateroom
LOWER DECK · 8 cabins · max 2 pp

Deluxe Stateroom

Comfortable staterooms (cabins number 3 - 10) with a double bed (lower) and one single bed (upper) bunk-style with a private head and shower. Your stateroom is the perfect place to read a book, nap in between dives and fully recharge for the next day. Sta
£4,995 per person
Just 1 left
Included
  • All diving — tanks, weights & air
  • 100% financial protection via our Travel Trust Association membership
  • ATOL holiday protection when we include a flight with your holiday
Not included
  • International flights — we can add these to your trip
  • Hotel stays before or after your trip — we have exceptional prices at the best hotels in the region if you want to extend your trip