Limit of Love: Umizaru (2006)
Limit of Love: Umizaru, also known as Umizaru 2: Test of Trust is a 2006 action drama film directed by Eiichiro Hasumi. It is the 2nd feature length film and third of the Umizaru projects, following on from the film Umizaru and the 11-episode drama series Umizaru Evolution. The film stars Hideaki Ito as Japan Coast Guard (JCG) rescue diver Daisuke Senzaki, and Ai Kato as his love interest Kanna Izawa. The film takes place after the events of the drama series, and is the last of the 3 part film and television project. The project is adapted from the popular manga series Umizaru by Shūhō Satō.
More at Wikipedia.