Vishal,
Good to see some underwater stuff. The world is so colourful down there. Look forward to some more such unique creatures.

As far as exif is concerned, you can paste the few like Camera, lens, focal length used, ISO, shutter speed, aperture. And since you are using a camera, whether any digital zoom was used. (ofcourse, I all ask people to just switch off the digital zoom). That will help us in understanding the situation.

Cheers,
Sabyasachi