How big was Prophet Noah's ark in order to accommodate samples of all species? How could it carry pairs of all types of creatures from all over the world?
The divine instruction to Prophet Noah was to carry on the ark a pair of every species. Certainly the Prophet Noah complied with this order and put those creatures on the ark. This must be understood as relating to the area in which he was and the practical possibility of implementing Allah's instruction. We are not told that Noah traversed the whole globe collecting those animals who were not available in his area. Nowhere are we told that couples of species from different climates and faraway geographical areas were guided to go to Prophet Noah's place in order to be on the ark. Indeed, there is no clear indication that the flood covered the whole earth. It certainly covered the area where the people of Noah lived, so as to exterminate all creatures other than those who believed in Allah and followed Prophet Noah. We cannot tell how big the ark was, but it certainly was big enough to accommodate those believers and a pair of each type of species. May I remind you that in the Qur'an we are told that Noah's followers were few.