The Mission Blue team is currently researching and tagging sharks in Cocos Islands. Learn more about our latest expedition. 
By: Robert Yuhnke

Isla de Cocos is magnificent. I spent 6 days there in 1987 diving with an expedition. We were blown away by the richness and diversity of the marine life. I can recall on a bright cloudless day drifting at 70 feet above a wall that dropped into the abyss when suddenly the light disappeared. Turning up, I could barely make out the sun shimmering through a swarm of fish (perhaps tang) so dense that the water had turned dark. On another day my crew mates thought I was nuts for diving over the rail one morning for a half-mile swim in a bay where I watched schools of 12-foot white tips below me as I swam.…