Perth, Australia -

An intense search is under way in the southern Indian Ocean for signs of debris from Malaysia Airlines Flight MH370 that went missing on March 8.

Here is a list of the countries taking part and what they have sent to help the search overseen by Australia from a military base near the south-western city of Perth:

AUSTRALIA

Four military P-3 Orion planes; four civilian planes; the navy supply ship HMAS Success.

CHINA

Two Ilyushin IL-76 planes; the polar supply ship Snow Dragon; the warships Kunlunshan, Haikou and Qiandaohu.

JAPAN

Two military P-3 Orion planes.

NEW ZEALAND

One military P-3 Orion plane; one civilian plane.

UNITED STATES

One military P-8 Poseidon plane.

SOUTH KOREA

One military P-3 Orion plane. - Sapa-AP