4 ms·

Browsing the various discussions on Reddit, the most plausible explanation is (IMO) fleets of squid fishing boats. http://www.reddit.com/r/EverythingScience/co

• seszett 12y ago
  As he says, it's really not the right hue (red light for fishing squid would make no sense anyway, since it wouldn't travel very far in water).
• madaxe_again 12y ago
  Nah, they use white/blue lights - definitely not orange!