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Dirty Rock
 Cocos Island, Costa Rica
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Entry Type: Boat
Bottom Composition: Rock
Aquatic Life: Big Animals
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From;
pbs.org/wgbh/nova/sharks/island/sansdirtyrock.htmlThis barren outcropping half a mile offshore may look unappealing, but the deep waters beneath it harbor perhaps the highest concentration of schooling hammerheads at Cocos as well as giant manta rays and the occasional whale shark. There are also healthy corals and a jagged-sided canyon featuring vast schools of silver snappers.