Ground-breaking photographic techniques, plus state-of-the-art graphics, 4-D scanning techniques and the most sophisticated natural history models ever, have all been used to provide an unparalleled glimpse into a world that few of us would ever expect to see. The joint National Geographic Channel and Channel 4 series Extraordinary Animals In The Womb follows the embryonic journey of four different animals: a kangaroo, a lemon shark, an Emperor penguin, and a parasitic wasp.
It is a staggeringly ambitious project, and one that has taken several years to make. Here are some of the pictures taken with the special cameras they used.