Tremendously tall or ridiculously small: nature never ceases to surprise. Africa has the largest bird and the tallest mammal - the ostrich, so massive it cant even fly, and the giraffe, with a neck that can extend up to seven metres. Borneo has its record-breakers too. The largest tropical trees fill the rainforests, while the smallest bears and even pygmy elephants roam this, Asias largest island. Earths largest animal can be just as hard to see as some of the smallest because it is so rare. The blue whale is a record-breaker, nearly thirty metres in length and up to 170 tons. Meet the big and the tiny in this round-the-world-tour of massive proportions.