Into the mighty blue

A new documentary follows the crew of the submersible Jiaolong as it plumbs the depths of the Indian Ocean, Xu Fan reports.

China's first manned deep-sea submersible vessel, Jiaolong, got plenty of news coverage, but few readers and TV viewers learned much about the personal stories of those who stayed inside it days and nights at sea.

These are tales of joy, sorrow, stress and nostalgia, as revealed in the recent TV documentary series Deep Sea, mainly revolving on China's exploration of the southwestern Indian Ocean.