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Aggressor Adventure Travel
Welcome to Guanacaste & The Bat Islands, Costa Rica




Guanacaste, Costa Rica


  Diving Environment:
  • Large schools of fish, Sharks, Manta Rays, Turtles, Eels, Mobula Rays, Frogfish, Sea Horses and more.

  • All dives from tenders.

  • Water temperature: 78 - 84F with cooler thermoclines

  • 3 - 5 mm wetsuit recommended






Escape to the beautiful area of Costa Rica;  Guanacaste and the Bat Islands for scuba diving from a liveaboard vessel.  Guanacaste is a province located on thepacific side of Costa Rica in the northwest part of the country. The Bat Islands are located in a protected Marine Park inside the Guanacasteconservation area. It is one of the most beautiful island chains in Costa Rica and home to a diverse dry tropical forest.The OKEANOS AGGRESSOR I™ & OKEANOS AGGRESSOR II™ focus on the areas of The Santa Rosa National Park and its marine sector called Islas Murcielago (Bat Islands); this area offers incredible beauty both above and below the surface. This beautiful Conservation Area earned a place in UNESCO’s World Heritage Site in 1999.rn

The Costa Rica scuba diving trip includes three main geographical areas in the North Pacific of Guanacaste: Bahia Culebra and Catalina Islands Area, Cuajiniquil and El Jobo Area, and Bat Islands in Santa Rosa National Park. These areas are very diverse with an opportunity to dive with lots of species of rays, mantas, turtles, sharks, large schools of tropical fish, frogfish and other macro life. Large pelagics such as Humpback Whales, dolphin  and other shcarks are seen. Guests will dive up to 4 dives a day including 3 night dives. View the itinerary for the day to day schedule.

Most of the action at Guanacaste and the Bat Islands can be seen between 30 - 100 feet with visibility between 20 - 80 feet. This is Pacific diving with thermoclines that range from 70 - 84 degrees with diving conditions that include surge and mild to strong currents. The tidal swings can fluctuate quickly on this pacific coast making conditions unique in that anything can be seen at any time. 



Guanacaste and the Bat Islands Dates:

Okeanos Aggressor I
Sept 28 - Oct 5, 2017
Nov 4 - 11, 2017
June 13 - 20, 2018
July 4 - 11, 2018
July 25 - Aug 1, 2018
June 3 - 10, 2019
June 27 - July 4, 2019
July 21 - 28, 2019
Aug 13 - 20, 2019
Okeanos Aggressor II
Oct 5 - 12, 2017
June 23 - 30, 2018
July 14 - 21, 2018
Aug 4 - 11, 2018
Aug 25 - Sept 1, 2018
June 9 - 16, 2019
June 19 - 26, 2019
July 13 - 20, 2019
Aug 7 - 14, 2019

Getting There, Passport & Visa Documentation:
Guanacaste is located off the Pacific coast of Costa Rica. Guests fly to San Jose, Costa Rica for a two-hour air-conditioned bus ride to Puntarenas, which showcases some of Costa Rica's most beautiful views. 

Most major airlines fly into San Jose, Costa Rica: American, Iberia, United, Delta, Lacsa, Taca. An overnight stay in San Jose is usually required prior to the trip due to airline schedules. Recommended hotels are the host hotels, Holiday Inn Escazu and Holiday Inn Express Forum in San Jose where group transfers are provided from.

Visitors must have a current passport, adequate funds to support themselves, and a return airline ticket. US citizens require a passport that must be valid for 6 months from date of entry. It is the travelers’ responsibility to ensure they have the proper visa to travel into each country on his or her itinerary as well as for re-entry and return to their country. Since regulations vary by country, contact your consulate or embassy of your country for the requirement.

Arrival/Boarding/Departure:
Guests will be met by a representative in uniform at our two host hotels, the Holiday Inn Escazu and Holiday Inn Express Forum (formerly Indigo Hotel) on the day of departure at a pre-set time for the group transfer. The pick-up  and boarding time schedule is available in our "Know Before You Go" document and below in the "Departure Schedule" link. Boarding the liveaboard for Guanacaste scuba diving depends on the tide schedule.  Immediately after boarding the yacht departs for Punta Gorda where the following morning guests will be ready for the first dive. After a week trip, the the yacht returns back to the dock in Puntarenas, Costa Rica. On the last evening of the Guanacaste scuba diving trip, a BBQ will be served on the upper deck. Check-out is at 7 am. Transportation is provided back to the host hotels or San Jose (SJO) airport from the yacht at the end of the charter.  Book flights after 12:30 pm.

Dive Insurance
Dive accident insurance is mandatory prior to traveling on OKEANOS AGGRESSOR I™ & OKEANOS AGGRESSOR II™. Proof is required prior to diving. We strongly recommend each guest purchase a comprehensive accident, medical, baggage and trip cancellation and interruption insurance when your reservation is made. Trip cancellation insurance will protect you from financial disappointment if you are prevented from making your scheduled trip. For more information on insurance, visit Diveassure or Divers Alert Network insurance on our website.

Taxes & Fees:
The Costa Rica Government charges a park and diving fee of USD $15 per day, CASH only. It can be expected to enter the Park 2 or 3 days depending on the itinerary. The Costa Rican Government implemented the park fee to maintain The protected land and marine area and preserve its natural habitat. All onboard sales/services have a 13% tax excluding park fees. All fees and taxes must be paid in cash.