A interesting gadget named “Go Pro” is able to get a data in the water.
In addition it has many interesting features such as stereo camera, fisheye wide angle and so on.
Please have a look the following link if interested in.
My colleague obtained underwater dataset for his research and I took a picture while doing that.
This is the perspective view of fish tank and there are artificial corals.
These corals have colors so that we can get many useful visible features from them.
Kyle took a shot!, Actually this was taken by my iphone.
And this picture was taken by Go Pro in the water.