Jeff Yonover

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1277 images found
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  • Schooling Scalloped Hammerhead Sharks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr176.JPG
  • Schooling Scalloped Hammerhead Sharks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr176 bw.jpg
  • Two large Yellowfin Tuna send a school of Bigeye Trevally scattering<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr164.JPG
  • An Eagle Ray cruising a reef wall, munching on a snack (most likely a gastropod it dug out of the rubble just a few seconds before the frame was captured)<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    Cocos Eagle Ray1409cr163.JPG
  • Having given up on eating the Sea Turtle in the background, a Tiger Shark directs its attention elsewhere.  <br />
<br />
(Note the arched back, and pectoral fins placed downward.  This is typical aggressive posturing.  We exited the water shortly after these frames were captured.)<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr156 bw.jpg
  • Having given up on eating the Sea Turtle in the background, a Tiger Shark directs its attention elsewhere.  <br />
<br />
(Note the arched back, and pectoral fins placed downward.  This is typical aggressive posturing.  We exited the water shortly after these frames were captured.)<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr155.JPG
  • A group of Galapagos Sharks passes by<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr143.JPG
  • Bigeye Trevally, schooling tightly<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr140.JPG
  • Schools of Jacks and Snappers<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr138.JPG
  • Schools of Snappers and Goatfish mix in swim through created by huge boulders<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr132.JPG
  • King Angelfish<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr131.JPG
  • Whitetip Reef Shark portrait---note the skin detail on the head<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr121.JPG
  • Large school of Mullet Snapper<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr120.JPG
  • A large school of Scalloped Hammerhead Sharks passes high overhead<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr118 bw.jpg
  • Rebreather divers filming schooling Hammerhead Sharks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    Cocos Hammerhead1409cr114.JPG
  • Rebreather divers filming schooling Hammerhead Sharks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr114 bw.jpg
  • Rebreather divers filming schooling Hammerhead Sharks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr112 bw.jpg
  • A large school of Scalloped Hammerhead Sharks passes high overhead<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr109.JPG
  • A large school of Scalloped Hammerhead Sharks passes high overhead<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr110 bw.jpg
  • Schooling Scalloped Hammerhead Sharks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr103 bw.jpg
  • Schooling Scalloped Hammerhead Sharks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    Cocos Hammerhead1409cr102.JPG
  • Schooling Scalloped Hammerhead Sharks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr102 bw.jpg
  • Divers decent a mooring line, as a Scalloped Hammerhead Shark gets cleaned by a Barberfish<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr093.JPG
  • While most reef fish are asleep, Whitetip Reef Sharks and Black Jacks search frantically for a meal.<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr090.JPG
  • Schooling Scalloped Hammerhead Sharks cruising above<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    Cocos Hammerhead1409cr078.JPG
  • A Mexican Hogfish hams it up for the camera<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr074.JPG
  • Hundreds of Creolefish feed on plankton in the current above a reef slope.<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr073.JPG
  • A diver photographs two large Yellowfin Tuna<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr071.JPG
  • Rebreather divers interact with Schooling Bigeye Jacks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr067 bw.jpg
  • A Diver observes a huge school of Jacks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr066 bw.jpg
  • Reef Fish, mostly Snappers, congregate by the hundreds<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr061.JPG
  • Schooling Cocinero Jacks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr062.JPG
  • A Whitetip Reef Shark, having snatched up a sleeping parrotfish, tries to leave the frenzied pack to enjoy its meal.<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr055.JPG
  • Hundreds of Creolefish feed on plankton in the current above a reef slope.<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr051.JPG
  • An aggressive Tiger Shark makes a very close pass toward the photographer, closing its nictating membrane to protect its eye.<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr050 bw.jpg
  • Scalloped Hammerhead Sharks schooling near the top of a submerged seamount, in order to be "cleaned" by Angelfishes and Barberfishes.  Two divers using rebreathers observe and try to capture the scene.<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr045.JPG
  • Scalloped Hammerhead Sharks schooling near the top of a submerged seamount, in order to be "cleaned" by Angelfishes and Barberfishes.  Two divers using rebreathers observe and try to capture the scene.<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr045 bw.jpg
  • Scalloped Hammerhead Sharks schooling near the top of a submerged seamount, in order to be "cleaned" by Angelfishes and Barberfishes.<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr043 bw.jpg
  • Scalloped Hammerhead Sharks schooling near the top of a submerged seamount, in order to be "cleaned" by Angelfishes and Barberfishes.<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    Cocos Hammerhead1409cr041.JPG
  • A Diver observes a huge school of Snappers<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr036.JPG
  • Marble Rays, all male, congregate in a reef cavern<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr026bw.jpg
  • Schooling Squirrelfish<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr019.JPG
  • Schooling Bigeye Jacks come up from the deep<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr017bw.jpg
  • Schooling Bigeye Jacks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr014.JPG
  • Divers, Schooling Jacks, and Boat<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr013.JPG
  • Schooling Bigeye Jacks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr012.JPG
  • A diver observes two species of schooling Jacks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr010.JPG
  • A Scalloped Hammerhead Shark looks for cleaner fish to remove dead skin and parasites.<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr181.JPG
  • A Scalloped Hammerhead Shark looks for cleaner fish to remove dead skin and parasites.<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr181 bw.jpg
  • Schooling Scalloped Hammerhead Sharks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr177.JPG
  • Schooling Scalloped Hammerhead Sharks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr177 bw.jpg
  • Schooling Scalloped Hammerhead Sharks, grainy<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr175.JPG
  • Schooling Scalloped Hammerhead Sharks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr173.JPG
  • Schooling Scalloped Hammerhead Sharks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr173 bw.jpg
  • Schooling Scalloped Hammerhead Sharks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr172 bw.jpg
  • A school of Mullet Snapper swims by<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr169.JPG
  • Schooling Scalloped Hammerhead Sharks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    Cocos Hammerhead1409cr166.JPG
  • Schooling Scalloped Hammerhead Sharks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr167.JPG
  • Swarming Creolefish feed in the current<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr158.JPG
  • Having given up on eating the Sea Turtle in the background, a Tiger Shark directs its attention elsewhere.  <br />
<br />
(Note the arched back, and pectoral fins placed downward.  This is typical aggressive posturing.  We exited the water shortly after these frames were captured.)<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr155 bw.jpg
  • Having given up on eating the Sea Turtle in the background, a Tiger Shark directs its attention elsewhere.  <br />
<br />
(Note the arched back, and pectoral fins placed downward.  This is typical aggressive posturing.  We exited the water shortly after these frames were captured.)<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr154 bw.jpg
  • Bigeye Trevally, schooling tightly<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr147.JPG
  • Bigeye Trevally, schooling tightly<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr141.JPG
  • Bigeye Trevally, schooling tightly<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr141 bw.jpg
  • Rebreather divers and Marble Rays<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr134.JPG
  • King Angelfish scale detail<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr131c.jpg
  • Guineafowl Puffer<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr128.JPG
  • Whitetip Reef Shark portrait---note the skin detail on the head<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr123.JPG
  • A large school of Scalloped Hammerhead Sharks passes high overhead<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr116 bw.jpg
  • A large school of Mullet Snapper<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr106.JPG
  • A large school of Scalloped Hammerhead Sharks passes high overhead<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr109 bw.jpg
  • A Green Sea Turtle glides by, with Hammerheads passing overhead<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr104.JPG
  • A Green Sea Turtle glides by, with Hammerheads passing overhead<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr104 bw.jpg
  • Schooling Scalloped Hammerhead Sharks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr101 bw.jpg
  • Schooling Scalloped Hammerhead Sharks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    Cocos Hammerhead1409cr100.JPG
  • Schooling Scalloped Hammerhead Sharks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    Cocos Hammerhead1409cr099.JPG
  • A Yellowfin Tuna hunts above the peak of a submerged seamount<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr096.JPG
  • Selfie with Mexican Hogfish and divers<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr083.JPG
  • Schooling Scalloped Hammerhead Sharks cruising above<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    Cocos Hammerhead1409cr077.JPG
  • Schooling Bigeye Jacks<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr063.JPG
  • An aggressive Tiger Shark makes a very close pass.<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr049 bw.jpg
  • A school of large Mullet Snapper cruise near the surface<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr046.JPG
  • Scalloped Hammerhead Sharks schooling near the top of a submerged seamount, in order to be "cleaned" by Angelfishes and Barberfishes.<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr043.JPG
  • A very pregnant White Tip Reef Shark rests on a rocky reef slope.<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr039.JPG
  • A large Black Jack and hundreds of Snappers cruise in and out under a natural "swim through".<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr038.JPG
  • A Diver observes a huge school of Snappers<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr037.JPG
  • Jacks, Snappers, and Squirrelfish congregate in a natural "swim through".<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr035.JPG
  • Black Jacks and hundreds of Snappers cruise in and out under a natural "swim through", while a diver passes by.<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr034.JPG
  • Black Jacks and hundreds of Snappers cruise in and out under a natural "swim through", while a diver passes by.<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr033.JPG
  • Black Jacks and hundreds of Snappers cruise in and out under a natural "swim through", while a diver passes by.<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr032.JPG
  • Black Jacks and hundreds of Snappers cruise in and out under a natural "swim through", while a diver looks on.<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr031.JPG
  • Large Black Jacks and hundreds of Snappers cruise in and out under a natural "swim through".<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr028.JPG
  • Marble Rays, all male, congregate in a reef cavern<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr027bw.jpg
  • Marble Rays, all male, congregate in a reef cavern<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr025.JPG
  • Marble Rays, all male, congregate in a reef cavern<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr025bw.jpg
  • Schooling Jacks under a reef pinnacle<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr023.JPG
  • Reef fish scurry to avoid an approaching Scalloped Hammerhead Shark<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr024.JPG
  • Divers exploring the topography of the reef slope, while Snappers school below.<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr022.JPG
  • Divers and several species of schooling reef fish, including Mexican Goatfish<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr007.JPG
  • A Marble Ray cruises a rocky slop while divers observe.<br />
<br />
<br />
Shot at Cocos Island, Costa Rica
    1409cr001.JPG
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