PUBLISHED : Wednesday, 09 April, 2003, 12:00am
UPDATED : Wednesday, 09 April, 2003, 12:00am

The Blue Planet

Pearl, 8pm

Bathed in warm, clear tropical waters, coral reefs are the rainforests of the sea. They look like underwater paradises but down there it's one big fight for the best space, and corals hold the whole thing together. This is the story of the formation of a coral reef with its myriad inhabitants and of its ultimate destruction.

Secrets Of War

Pearl, 12.45am

From the Ho Chi Minh trail to the tunnels of Cu Chi, this is the remarkable story of the hidden supply highways, underground cities, covert camps and double agents that comprised the Viet Cong's secret methods to foil the efforts of the United States to seal off South Vietnam during the Vietnam war.