There doesn't currently seem to be a way to report stuff like this: http://www.rspb.org.uk/community/getinvolved/m/sealife/768512.aspx. It's the second spam posting I've seen this week in the Photos section under 'Safeguard Our Sea Life'.
Ah, thanks, doggie. That post has already been zapped, but I found what you meant on another (non-spammy) photo.
There has been a flurry of these of late, have been taking the appropriate action. But many thanks both for your eagle eyes!