Chris and Martin try out Aviva's new remora sub and attach themselves to a great white shark so they can follow it to the shark nursing grounds and see it give birth. But they soon hit a snag when Gourmand appears and plans on capturing the shark to make a soup.moreless
Allison has lost her computer records on Africa. Chris and Martin have only eight hours to try and revisit all the places they had been to during the series.
Chris and Martin are back in an African Savannah to learn how camouflage is standard defense for several creatures. They see how each animal blends in with its environment.
Chris and Martin ride a chronological timeline of the animals that came to Australia over the centuries.
Via multiple historical perspectives, Chris and Martin take up an aerial view on the flight of birds. They learn how different birds fly.