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© copyright by Janet Thomas

© copyright by Janet Thomas
Last week the Argo and the DeepSee submersible hosted an exciting 12-day scientific expedition to Cocos Island! This voyage was a collaborative effort by many organizations, scientists and individuals – including CREMA, Migramar, Fins Attached, WWF Columbia, Conservation International, NFB and more. Last but not least, photographers and videographers from the groundbreaking Ocean School Project spent many hours in the water collecting footage to bring the message of conservation across Canada (and the world). A joint effort between Dalhousie University and the National Film Board of Canada, the videos are designed to inspire a passion for the ocean in young people. Watch this video to find out more!

© copyright by Janet Thomas
© copyright by Janet Thomas
The researchers’ two greatest achievements this week were 1) tagging hammerhead, silky, blacktip and Galapagos sharks to better study these fascinating creatures and their behavior – particularly migration patterns in the Eastern Tropical Pacific and 2) deploying two acoustic receivers at the Las Gemelas seamount using the DeepSee submersible (to track the movements of the abovementioned tagged animals). Once conservationists better understand shark behavior in this region, they become empowered to protect them. Additionally, receivers were changed out all around the island to retrieve data and place fresh ones.

Mixed in with the scientific research was, of course, a solid week of diving Cocos Island, Costa Rica! We swam with Galapagos sharks at Dirty Rock, and watched hammerheads filing into the cleaning stations to be rid of parasites and debris. In Chatham Bay we saw tiger sharks, marble rays and countless eels and fish. The current was reversed at Submerged Rock and the cave was bursting with colorful fish and pristine visibility! Small Dos Amigos gave us sightings of as many as 8 Galapagos sharks at a time. At Dirty Rock we saw schools of jacks large enough to block out the sun. Visibility was stellar most of the week, hovering around 70ft, with water temperatures ranging from 82-84ºF and pleasant crossings both ways.

Dive Conditions
Currents  
mild
strong
Visibility   65 ft / 20 m
Water Temp.   80°F / 27°C
Weather
Climate  
sunny
rainy
Sea  
calm
choppy
Crossings
to Cocos Island  
calm
choppy
to Puntarenas  
calm
choppy

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