Conservation groups Turtle Island Restoration Network of the US and PRETOMA of Costa Rica run semiannual trips to Cocos Island where they perform ongoing sea turtle and shark tagging. Join them September 24 - October 6, 2012 for a 12 day trip on the Undersea Hunter's Argo where you will do four dives a day and can help participate in catching turtles and tagging sharks.
I've done this trip twice before (and would be on this one as well, if only my schedule allowed it) and thought it was an amazing experience. Not only do you get to do all the world-renowned Cocos dives, you also get to contribute to conservation research, AND trips are tax-deductible (at least in the US).
For more information please go here: http://www.seaturtles.org/article.php?id=1703
-Gina


