>> ellen sartore: i do. >> joel sartore: aw. rd you say that. you do? >> ellen sartore: yeah. >> whitaker: but he is gone all the time? >> ellen sartore: he hasn't been to the last seven of my birthdays, just because my birthday is in migration season. so, he's-- >> whitaker: migration season? ( laughs ) >> joel sartore: it's true. >> whitaker: so that's a birthday buster. >> joel sartore: yeah. >> whitaker: the next day, sartore showed us a beetle he had spotted. >> joel sartore: i think he'd be worth putting in the photo ark. >> whitaker: a species he hadn't shot before. so there's nothing too small for you, huh? >> joel sartore: nothing too small-- if you can see it with your eyes, we'll photograph it. >> whitaker: how big is this guy? >> joel sartore: oh, that guy is the size of a grain of rice. >> whitaker: tiny. >> joel sartore: yeah, tiny. >> whitaker: so every animal fills up your frame? >> joel sartore: that's right. >> whitaker: small or large. >> joel sartore: he's as big as a polar bear. >> whitaker: why do you do tha