Mr Hammond is keen to impress his brother, sea-life expert Professor Hammond, with an undersea fact. So Andy helps out by investigating the one fact the Professor doesn't know: where the sea kraits of Niue Island lay their eggs. His journey features an elaborate sea krait dance and takes him deep into the caverns underneath the island.

After Safari World's wood duck chicks get stuck in a hole halfway up a tall tree, Andy travels to North America to see how they deal with such a problem in the wild. After running into a hungry rat snake, two alligators and a star-nosed mole, Andy makes a surprising discovery about wood ducks.