Songfacts®:

• This dreamy pop ballad was our introduction to Billie Eilish, who posted it to SoundClound in November 2015 when she was just 13. It quickly went viral, and in March 2016, Eilish released a video for the song directed by Megan Thompson. Interscope Records swooped in to sign her and gave the song a major-label release in November 2016 along with a promotional push touting their now-14-year-old soon-to-be superstar.
  
  At the time, Eilish was often compared to Lorde, but it quickly became clear that she defied comparisons. In "Ocean Eyes," she sings about being captivated by a guy who can transport her with his stare - sentimental stuff. With her next singles, Eilish showed a very different side, releasing nefarious songs like "Bellyache" (where she kills her friends and puts their bodies in her car) that proved there was a profound depth to her work. When her debut album was released in 2019, she became a household name and added to her already huge and strident following.
• Finneas O'Connell originally wrote "Ocean Eyes" for his band but he let his sister have it when she needed a song to choreograph a dance to. Eilish recalled to Vogue:
  
  "He came into my room in October of last year to tell me he had this song called 'Ocean Eyes.' He'd been doing it with his band before, but of course I'd heard it because I was right next door. I sang it, and we both loved it. It's just a beautiful song, and Finneas is an amazing writer. I loved it and I couldn't get it out of my head for weeks. I'm in a dance company, and one of my teachers asked if I could record [the song] and send it to him so he could choreograph a dance. So all of the production is based off of lyrical contemporary dance."
• Finneas and Billie Eilish uploaded the song to SoundCloud one night so that Billie's dance teacher at the Revolution Dance Center in Los Angeles, Fred Diaz, had it for a show. They woke up the following day to find it had gone viral, opening the doors to their successful recording career. "It gave us something from nothing, which is so unbelievable," Finneas told NME. "So I always have this profound gratitude for that song - obviously, our careers have been built on different moments since then, but that was the thing without which we never had anything."
• Giving his sister this song was a straightforward decision for Finneas. "I remember doing 'Ocean Eyes' as a band and just being like, 'I'm failing the song,'" he told Rolling Stone Music Now podcast. "And I remember hearing Billie sing it... and it was just like, 'Oh, this is what this song deserves'. Like, this is so beautiful in her register, in her voice. And there was no turning back from that point."
• In late 2025, "Ocean Eyes" soundtracked a TikTok transition trend where users cover the camera until their eyes fill the frame on the lyric "ocean eyes." Beauty and skincare creators and brand accounts adopted the meme, which drove renewed streaming for the track and its return to the UK Singles chart.