The lighting underwater is often quite different than that above water. This section will provide an opportunity to explore this delightful fact. Although sparsely populated now, it is likely to change.

causticsCaustics produced by surface waves acting as lenses.

causticsReflections on the underside of the water surface are modulated by waves.

causticsThe colours in the upper left result when the water surface prismatically spreads the sunlight.

Fraser tartan