The manga has been adapted into two NHK high-definition specials, four films, and one drama series.

Title: 海猿 Title (romaji): Umizaru Also known as: Umizaru Evolution / Sea Monkey Format: Renzoku Genre: Action, human drama, romance Episodes: 11 Viewership ratings: 13.1 Broadcast network: Fuji TV Broadcast period: July 5–September 13, 2005 Air time: Tuesday 21:00 Theme song: Ocean by B'z Synopsis: A story of friendship, love and the brutal training of 14 Japan Coast Guard officers becoming rescuer divers.

The rescuer divers, on the front line in rescue activities in heavy seas and always one step away from death, are a group of specialists in a profession that only 1% of all Coast Guard officers qualify for.

In order to receive that qualification they have to undergo 50 days of grueling training in rescue activities.

The young Coast Guard officers, including Daisuke Senzaki, take on the challenge of that hellish training.