For all boating enthusiasts - here's more information and a facebook link!
Wrote about this in 2010 - here's a link.
|info + pic from wiki.com|
|permission requested - interesting blog about phenomenon but not English text|
|image from pakanm|
|Photo from Richard Barrow|
|click here for location|
|photo from Richard Barrow|
|picture courtesy of Richard's blog|
|permission from Jamie in Phuket|