i'm jack hanna.o many ways to count. let's look back at 9 of my favorites. oh! number 10--the desert dromedary that took me for the ride of my life; 9--the sand-eating sea cucumber; 8--kenya's long-necked gerenuk; 7--a serving of chinstrap penguins on ice; 6--the giraffe that nearly followed me home; 5--those colossal andean condors; 4-- hippos living large in botswana; 3--the giant anteater, keeping brazil safe from termites; and number two--the biggest flock of flamingos i've ever seen. taking the number-one spot in today's countdown are sea turtles--you know, the champion long-distance swimmers of the open seas. can you swim a lot? [surf crashing] all sea turtles can swim, but the leatherbacks take the gold. they can migrate more than 7,000 miles over the course of one year. how do we know? field biologists like brent stewart track the turtles around the world with satellite transmitters. >> so we'll get several locations a day. we hope for at least a year and probably a little bit longer than tha