rockeymoore wrote::( Hi, I'm on Hilton Head beach right now and observed the same phenomenon. I have taken pictures so that those who know can tell us what it is....Unfortunately, the photo upload functioin of this website doesn't seem to be working so that i can share the photo.
Attach them as attachments (see below, it's working fine) or upload them to imageshack or any other of the hundreds of online photo site sites and insert it as a thumbnail or full image. Let me know if you have any further trouble.