For those with some Italian - and anyone happy with just the pictures - as part of their 'On Demand' system, the state broadcaster here (RAI) have an entire 90 minute episode from their wonderful "Linea Blu" series (first shown in July, and all about Ischia and Procida, and the recently-created Marine Protection Area that surrounds the two islands) available here...
Travel porn at its finest - and hopefully available to those whose ISP isn't based in Italy: perhaps someone could let me know?
PS - for a wider view around the country, either use the "Cerca" search box or look further down the page where, for instance, there's this - on Ostia and the ruins of the nearby hexagonal harbour at Portus..
Otherwise, perhaps start with one of these two weekly series...
"Linea Blu" - the sea and coasts
"Linea Verde" - the countryside
PPS - If they're too long for TA, copy and paste the above links to your browser's address line!