The blue-spot had to swim just to stay in place in the current.

2003:09:04 12:52:07
Island: Langkoi
Dive Site: Manta alley
Speed: 1/50 sec
Aperture: f5.6
ISO: 100
Exposure Compensation: 0.0
Exposure Program: Aperture Priority
Focal Length: 12 mm
Flash: