announcer: "jack hanna's wild countdown" is sponsored by nationwide. jack: hi, everybody. i'm jack hanna coming to you from my basecamp here at the columbus zoo, and welcome to "wild countdown." jack, voice-over: one of the highlights of being a conservationist comes when thej! su! jack, voice-over: whether they're helping seagoing sea turtles... bette: these guys are opportunistic feeders, so it gets 'em in trouble with all the plastics in our oceans. jack, voice-over: elegant gray crowned cranes... sue: aww. deo: be free! sue: there it goes! jack: wow! jack, voice-over: or magnificent marine manatees! dr. maya: manatees are very

announcer: "jack hanna's wild countdown" is sponsored by nationwide. jack: hi, everybody.ack hanna, coming to you from my basecamp here at the columbus zoo, and welcome to "wild countdown." just like humans, animals rely on their senses to take in the world around them. teague: we're standing right underneam outh mammal. you're just drawn to them. jack: from outstanding eyesight... dave: from thousands of feet in the sky, these guys can see the eyelashes of a mouse flickering. jack: to superb smell. suzi: the baby's playing with the other one. jack: oh, sue. to a top-notch sense of

re seasoto overl wh l announcer: "jack hanna's wild countdown" is sponsored by nationwide. : hi, everybody. i'm jack hanna coming to you from my basecamp here at the columbus zoo, and welcome to "wild countdown." there's no doubt that isolated islands are the perfect place to relax! today, we'll see all kinds of creatures that are thriving thanks to their tropical homes! from supremely smart dolphins... woman: we're gonna ask these guys to swim across the pool and touch the buttons at the same time. jack: all right. to remarkably resourceful bats... they're all around us, sue, they're everywhere. man: they're everywhere on this island. jack: even lucky, relocated bison! woman: there they are.