Hans and Lotte say goodbye to the sharks and groupers on a farewell dive in the Indian Ocean steaming towards Malaya, they visit a fish trap in the open sea, then enjoy a taste of exotic civilisation in Penang, before going on south-east to the uninhabited Sebilan Islands, Where the murky sea teems with diatoms microscopic plants in fantastic shapes.
Directed and produced by Hans Hass in association with the BBC Natural History Unit
(A new film series)