My own attempts at marine photography failed miserably. After that experience, I have a new appreciation for what those marine photography wizards in the table below achieve. My hat's off to them!
Pipof, a site by professional marine photographer Christophe Guigueno of Paris, France. He's the one who made those beautiful action shots of a red Marc Lombard designed mini-650, pictures that are sported on quite a few mini-650 sites.
Benoît Stichelbaut photographe de mer' says it all, at least if you speak a bit of French. I like his site a lot, but check it nonetheless and form your own opinion.