- Debussy wrote the work in Burgundy, but completed it close to the sea in Eastbourne, England
- poorly received at its premiere, La mer became wildly popular two years later
- La mer was completed in a year and a half, which was relatively fast for the usually slower composer Debussy
- film composer John Williams reused motifs from La mer in his Jaws soundtrack; Luciano Berio quoted from La Mer in his Sinfonia