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Dive Review of Okeanos Aggressor in
Costa Rica/Cocos Island

August, 2007, an Instant Reader Report by Barbara Rizzardi, UT, USA
Report Number 3560
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Reporter and Travel
Dive Experience
501-1000 dives
Where else diving
Bonaire, Aruba, Curacao, St. John's, St. Lucia, Bora Bora, Grand Cayman,
Andros Isle (Bahamas), Cozumel, Isla Mujeres, Akumal, Turks/Caicos,
Closest Airport
Getting There


Dive Conditions

rainy, cloudy  
choppy, currents  
Water Temp
74   to 82    Fahrenheit  
Wetsuit Thickness
Water Visibility
75   to 100    Feet  
Dive Policy
Dive own profile
Enforced diving restrictions  
No blue water diving or diving below 120 feet. Needed to be nitrox
certified and carry safety sausage. Needed gloves.  
Nitrox Available?
What I saw
1 or 2 
Whale Sharks
> 2 
> 2 
Ratings 1 (worst)- 5 (best):
  3 stars
Tropical Fish
5 stars  
Small Critters
  5 stars
Large Fish
5 stars  
Large Pelagics
  5 stars
Underwater Photography  1 (worst)- 5 (best):
Subject Matter
Boat Facilities
Overall rating for UWP's  
Shore Facilities  
Ratings and Overall Comments  1 (worst)- 5 (best):
4 stars
3 stars
Service and Attitude
5 stars
Environmental Sensitivity  
Dive Operation
5 stars  
Shore Diving  
1 stars  

Overall Rating

Value for $$
3 stars   
5 stars    
Cocos Island is truly a diver's paradise. Our group flew into San Jose,
Costa Rica, requiring an overnight stay in a hillside hotel with beautiful
views. After a 3-4 hour bus ride over the mountainous (curvy) highway to
Puertorenas, we boarded the Okeanos in the evening and departed
immediately. The crossing to Cocos Island was very rough, 36 hours over
large swells, necessitating transcop patches AND motion sickness pills for
nearly everyone. The staterooms were small but adequate in size,
comfortable, and clean, with mostly a double bed and single bunk in each
room and one quad room, each with a toilet/shower.  They were cleaned
daily. We moored in Chatham Bay which was protected and very calm. Views
from the boat were amazing with dozens of waterfalls gracing the
rain-forested cliffs of Cocos and daily rainbows. Bird life was profuse.
Even from the liveaboard, we saw Mantas and dozens of silky sharks from the
decks.   Every dive was spectacular.  Most dives were to 100 feet, all on
nitrox, and averaged 50 minutes. There were three day dives and one night
dive each day. Dive sites were reached by Panga boats which accommodated 12
divers comfortably, each with built in racks for tanks.  The crew set up
the tanks and assisted in checking nitrox levels. All dive times, nitrox
mixes, and depths were carefully monitored. The crew was very friendly and
interactive. Nearly EVERY dive we saw HUNDREDS of hammerhead and white tip
sharks, dozens of marble rays, several manta rays and eagle rays,
profusions of tuna, bait balls containing thousands of fish, and dozens of
eels (many free swimming).  There were occasional turtles and dolphins and
even a large frogfish walking around. Currents could be strong and could
shift direction without warning. Thermoclines occurred at depth, dropping
temps to the low 70's. Our group wore 3 or 5 mm wetsuits, with hooded
vests, 5mm gloves (needed to hang on to the rocks in current).  Divers with
cameras had unending photo op as the sharks and whale sharks are unafraid
and approach closely.  Night dives involved watching packs of white tip
sharks in a feeding frenzy, covering the reef thickly like maggots.
Overall, the diving was the best in my 32 years of diving anywhere. Cocos
Island itself is like Jurassic Park. Access is strictly limited. Only the
park rangers live there. There is an extra $245 charge per person to dive
the Cocos area, $100 pp fuel surcharge, and $100 pp charge for unlimited
nitrox in addition to what we paid for a package deal for flight, hotel,
diving, and the liveaboard.  But still, worth every penny. The dive crew
made a DVD of our diving which amazes everyone who sees it. My thanks go
out to the crew.  The trip of a lifetime!!
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Other dive reports on Aggressor Fleet

All Costa Rica Dive Reviews and Reports
Diving Guide to Costa Rica
Diving Reviews for All Dive Destinations

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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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