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                                            Shark Fin Rock
                                              Cocos Island, Costa Rica 
                                            
                                                
                                                    
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                                                             Entry Type:  Boat 
                                                            Bottom Composition:  Rock 
                                                            Aquatic Life:  Big Animals 
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            Shark Fin Rock is a boat accessible salt water dive site, located in Cocos Island, Costa Rica.
From; 
pbs.org/wgbh/nova/sharks/island/sanssharkfin.htmlLooking eerily like its namesake, this six-foot spire arcing out of the ocean is the site to see the largest schools of big-eye jacks you’re likely to see anywhere. The size ranges from 50 to several thousand. Marble rays and whitetip reef sharks may also be seen resting on the bottom here.