Some Marine photos (not mine)

[rockgarden]

https://www.flickr.com/photos/coby_bidwell/

[jetstream]

Very very nice pictures. I wish I have 1/2 the skills and technique. Also the nice equipment too! 

[fischkopp]

Indeed a very nice picture stream. He has a good eye.

He actually used entry level Canon 40D and a powershot P&S for underwater. It's never the equipment that makes great pictures.