I'll leave it up to you, as you've got a better idea of what would work for the people who read your website. (But don't use Dolphin Dreams, as it's still in editing and those excerpts could change before publication.)

I think Spindrift would probably be a good one for people who aren't used to m/m, as it's fairly gentle, but I don't know whether Italians would be sufficiently familiar with the silkie legend to enjoy the excerpts.
http://www.julesjones.com/fiction/details/spindrift.html

And I've just discovered that I've still got the unedited excerpts for Pulling Strings on the website. I think I'm going to be spending the afternoon doing website updates...