Felons force the Andrews family to dive in shark-infested waters in search of a sunken treasure.
Steve and his family fret when they discover their supplies disappear even when the Westwind is at the sea.
In revenge for what he swears Steve did to him, an incapacitated man abducts Robin.
Tom and Robin bravely go to face a fabulous living thing feared for its ability to kill only by its will power. Japanese World War II stragglers on a Pacific Island evidently inspired this episode. The Westwinders -journalist father, biologist mother, and two teenage sons- get to the bottom of a mystery Kahuna, a Hawaiian witch doctor who has been terrorising the natives.
Captain Hooks, an old gob, embroils the Andrews family in a journey to find a jade cargo.
Modern-day sea rovers overrun the Westwind and proceed to threaten and filch the Andrews.
A native oldster, Tutu Kane, beseeches Tom and Robin to help him in fulfilling a ritual, diving into a lagoon where the shark god lives.
A lady seeking his long missing husband requests assistance from the Andrews, for she believes he is still alive near the inshore where he reportedly died while diving.
Tom and Robin come to the aid of an elderly fisherman suspect of having robbed the fishing nets of his peers.
A park ranger asks Steve help in unraveling the mystery surrounding the appearance of ghosts that scare off the visitors in a National Park.
Kimberly ends up bitten by a sea snake while diving in a dangerous area, after overlooking a warning from her parents.
The infamous Captain Hooks has returned and this time he brings a map that purportedly leads to a fabled treasure.
The Andrews adults face charges of abduction after having taken a young man aboard. A young boy hitches a lift in the boat but he arouses suspicions when he is found carrying a bagful of money. (Last episode of the series)