Test your knowledge with the WWF Coral Triangle Quiz and get a chance to win great prizes!

About the quiz:

- The quiz will be online for a limited period, until the end of April 2009

- Ten lucky participants will be chosen at random to win an Under the Sea 3D poster signed by the film-makers Howard and Michelle Hall

- The first five names selected will also receive a copy Deep Sea, the Halls' previous IMAX film, together with an IMAX T-shirt as extra bonus prize.

- You must fill in the available form at the end of the quiz to be eligible for the prizes