  This shark's distinctive head is designed for greater agility
and panoramic vision, making the hammerhead a hunter to be
reckoned with.  ", "is_us_only": "false", "title": "World's
Deadliest: Hammerhead Sharks", "url":
"http://video.nationalgeographic.com/video/animals/fish-
animals/sharks-and-rays/deadliest-hammerhead-shark/",
"country_code_deny_list": [], "allowUserEmbed": "True",
"related": { "link": [ { "url":
"http://animals.nationalgeographic.com/animals/fish/hammerhead-
shark/", "name": "Hammerhead Shark Animal Profile" } ] },
"credit": "National Geographic", "smil": "http://video.nationalg
eographic.com/video/player/data/xml/deadliest-hammerhead-
shark.smil", "country_code_allow_list": [], "HTML5src":
"/video/player/media-mp4/deadliest-hammerhead-shark/mp4/variant-
playlist.m3u8", "still": "http://video.nationalgeographic.com/ex
posure/core_media/ngphoto/image/58086_0_616x346.jpg",
"transcript": "  In the ocean, hammerhead sharks prowl with some
of the most amazing eyes in the natural world.  The bizarre