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Dive Review of Aggressor Fleet in
Costa Rica/Pacific-Guanacaste/Bat Islands

Aggressor Fleet: "Guanacaste and Bat Islands aboard the Okeanos Aggressor II", Jun, 2017,

by Ronald JOhnson, TX, US (Sr. Reviewer Sr. Reviewer 8 reports with 4 Helpful votes). Report 9641 has 2 Helpful votes.

No photos available at this time

Ratings and Overall Comments 1 (worst) - 5 (best):

Accommodations 4 stars Food 5 stars
Service and Attitude 5 stars Environmental Sensitivity 5 stars
Dive Operation 5 stars Shore Diving N/A
Snorkeling N/A
Value for $$ 4 stars
Beginners 1 stars
Advanced 5 stars
Comments We've done close to 30 liveaboards and do not do shore diving. This Aggressor franchise was top notch and had a stellar crew. Captain Mauricio was amiable and very capable. The dual cooks were over the top in quality, presentation, quantity, and taste. Some of the best food we have ever had! Eduardo, the head waiter anticipated and fulfilled our every need. He was incredible. The dive staff was attentive and more-than-capable. All was really top notch with the ship and it's incredible staff.
It's a 12-16 hour boat ride to reach Guanacaste/Bat Islands. Very enjoyable as Eduardo kept our drinks full. High levels of anticipation made the boat seem slow....
The diving...Well, let me start by saying "it ain't for sissies!" This is an advanced dive site. I have never worn a wet suit and this trip got me don such. My dive computer showed 82 degrees at the surface, but once, it flipped down to 71degrees and that is bloody cold!
Minimal coral life as we know it in the Caribbean or Western Pacific. All of Costa Rica is volcanic so lots of boulders teeming with fish!
The surge was strong and very disconcerting, slamming us around and creating obstacles for all but the most experienced and physicially fit divers. Most challenging to dive from the Okeanos very-well-equipped dive tenders. We are used to stepping off the boat into the water.
Visibility was also challenging. Bull Sharks came to investigate but only looked like shadows. 30-40' was normal and 60' max was infrequent.
This site is relatively virgin in it's lack of diver impact. Very healthy reefs and fish. Many sea horses and squadrons of Spotted Eagle Rays.
Not sure I would go back with so many other easier-to-dive sites in the world, but all in all, the Guanacaste/Bat Islands Okeanos Aggressor made for an excellent dive adventure. All advanced divers should do it!
Websites Aggressor Fleet   

Reporter and Travel

Dive Experience 501-1000 dives
Where else diving All over the world on some of the best liveaboards in the world. The Thorfinn was the worst! Over 29 liveaboards over the years! and this Cayman Aggressor was, by far, the best!
Closest Airport San Jose Getting There All the US airlines currently suck. They just don't care. United is probably the worst!

Dive Conditions

Weather rainy Seas choppy
Water Temp 82-71°F / 28-22°C Wetsuit Thickness
Water Visibility 30-60 Ft/ 9-18 M

Dive Policy

Dive own profile yes
Enforced diving restrictions [Unspecified]
Liveaboard? yes Nitrox Available? yes

What I Saw

Sharks Lots Mantas Squadrons
Dolphins Schools Whale Sharks None
Turtles 1 or 2 Whales None
Corals 2 stars Tropical Fish 5 stars
Small Critters 3 stars Large Fish 3 stars
Large Pelagics 3 stars

Underwater Photography 1 (worst) - 5 (best):

Subject Matter 4 stars Boat Facilities 4 stars
Overall rating for UWP's 4 stars Shore Facilities N/A
UW Photo Comments Excellent and large photo table with many hoses for blowing water off. Roomy and everyone respected the photo real estate. Two huge rinse tanks for cameras only.
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Note: The information here was reported by the author above, but has NOT been reviewed nor edited by Undercurrent prior to posting on our website. Please report any major problems by writing to us and referencing the report number above.

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