عکس روز نشنال جئوگرافی

پایگاه خبری “ججین” 

           DECEMBER 26, 2017           HOW TO WHALE

In Mexico’s Revillagigedo Islands, a humpback whale mother teachers her calf how to breathe and control its buoyancy. Humpback whale calves are born already weighing one ton, and they’ll nurse for a year—averaging 160 gallons of their mothers’ milk a day.