What time of day is most suited for under water photography?

In contrast to film and photography on dry land, where the best light is generally found early in the morning, or late in the afternoon, noon offers the best light for under water footage.

The reason for this can be found in the light filter properties of water. After only 1 m (3 feet) the ray of light passing through water has already noticeably lost some of is red colour spectrum.

And please note: We're not talking about dive depth in this case! If the sun is at an angle, that ray passes threough the water at an angle. i.e. if the afternoon sun hits the water at an angle of aournd 36°, then 3 ft of dive depth adds up for 5 ft the ray has to pass through the water to reach the object your're taking a photo of. The light is then refelected from the object an has to travel another 3ft or so to get to your lens. That totals at 8 ft of water to filter out that nice, warm red light at only 3ft dive depth!

For that reason we tend to use that time of day for our footage in which the light has the shortest distance to travel through the water on its way to our lens.

That is the time, when the sun is directly above and generally speaking
between 11:00 a.m. and 1:00 p.m.
(and if possible, at low tide...)