Joy and Mark investigate the reproductive secrets of marine mammals to learn how animals that breathe air manage to mate, give birth and raise their young underwater. Witness a dolphin birth, explore the difficulties of breastfeeding underwater and learn how dolphin and whale young avoid predatory killer whales.
In Australia, Joy and Mark uncover the reproductive secrets of some of the strangest mammals on Earth — the pouch-wearing marsupials. Thanks to their bizarre way of reproducing, kangaroos thrive in one of the most unpredictable, drought-prone environments on Earth — the Australian Outback.
Joy and Mark travel to Borneo to explore the reproduction challenges of our close cousin — the orangutan. The largest tree dwellers on the planet, orangutans mate, give birth and raise their young high in the jungle canopy. Joy witnesses the sneaky tactics that the females use to take control of mating and Mark finds out how males fight back.
Joy and Mark travel to Africa to explore the unique reproduction challenges of the largest animal on land — the elephant. Find out how females select the strongest mates, why elephants have the longest pregnancy in the animal kingdom and how they safely deliver a 220-pound baby; witness the remarkable first steps of a newborn calf.