Ive seen photos taken from ships on the ocean. The whole wake lights up to the horizon. Pretty awesome sight.
I've experienced this on a much smaller scale when I was a teen in Florida. I forgot what they called it. Phosflourescence (sp?) We would take our 12' boats out in the evening and the wake would have a lime green light look to it.
We were stoned most of the time but It happened. I swear!! :-)