Last Thursday I was diving at Hin Muang / Hin Daeng in the South Andaman Sea (SW of Phuket, Thailand) when along came a very large Manta Ray. It cruised around for quite a while. On the next dive, a couple more Mantas arrived and glided around for most of the dive. They seem to enjoy swimming through bubbles. One came within a meter of me before passing over my head. Magic!
To watch two minutes of video footage of the Manta Rays, please visit this page on my website: http://web.me.com/peter.walker/peterwalker.com/Mantas.html
(emailed to TwoFish by Peter Walker)