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Original 132-minutes French version has a music score by director Luc Besson's usual composer, Éric Serra. The USA version is 118 minutes long and was re-scored by Bill Conti. The version released in the rest of Europe is 118 minutes long. A special Version Longue (long) director's cut released in France is 168 minutes long.

SPOILER: The French and European versions end with Jaques swimming off with the dolphin, after having reached a depth where he can not survive. In the American version, a happier ending was added, where the dolphin takes Jacques to the surface.

The original 119 minute U.S. version was rated "PG-13" and was edited to earn a "PG" rating for its release. It was restored to 168 minutes in 2000 and the restored version was rated "R" by the MPAA.

The "R" rated director's cut on video includes usages of the "F" word and two sex scenes (featuring nudity by Jean Marc Barr and Roseanna Arquette).