# Underwater

Just put the camera under the surface and point it up. At present, the water volume renders as black. However, the ocean surface and other objects are fully rendered and attenuated by the water volume. The water volume attenuation is relatively strong in the red, so that objects viewed from underwater tend to acquired a blue-green tint with distance from the camera. The discussion about Jerlov water types demonstrates how to control the attentuation. In this case, the `diffuseK` parameter has the primary influence.

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