The pictures are taken with a Canon Powershot A85 digital camera in an
underwater case. Color adjustment has been done in Photoshop for some of the pictures.
Suggestions
If you plan to dive on December at PV get a 5mm or 7mm wetsuit with hood. Also keep in mind that the visibility is not very good, lots of floating particles to mess up pictures.
The boat I dived with did not had a rinse bucket, keep that in mind for camera equipment.