About Revisions Manta Corner Cocos Island, Costa Rica Max Depth: 81-90ft/25-27m Entry Type: Boat Aquatic Life: Big Animals 5/12/2014 1:09 PM LatitudeAdjustment

From pbs.org/wgbh/nova/sharks/island/sansmanta.html
Diving down 90 feet or so off Dampier Head, a rugged point named after the 17th-century adventurer William Dampier, you can often encounter manta rays, whose bird-like gracefulness belies their enormous size (wingspans of ten feet are not uncommon). Mantas here often accompany divers for the duration of a dive