If by 'protection program' is meant coordinated efforts to preserve submerged heritage, I would suggest you refer to the professional societies, such as the Council on Underwater Archaeology - see http://sha.org/underwater/

Dear Brenda,

Did you saw http://archaeology.institute/index.asp ? There is info about Baia Underwater Park at the Naples bay.

Best,

Preslav

Dear Brenda, 

if you want informations concerning the Underwater Archaeological Park of Baiae you can go to the site 

http://www.iscr.beniculturali.it/pagina.cfm?usz=5&uid=73

http://www.iscr.beniculturali.it/pagina.cfm?umn=74&uid=171&usz=2&smn=102

The Superior Institute for Conservation and Restoration is involved in the restoration of the site, you can find the reports on  ended restoration in the first link. There is not a report on Portus Iulis because the restoration is not over. 

If you want more informations you can search for papers of the following authors: Davidde, Petriaggi, Ricci, Di Fraia, Demma, Valeri.

You can find some of them here:

http://www.iscr.beniculturali.it/pagina.cfm?usz=2&uid=540&umn=74&smn=102

http://www.iscr.beniculturali.it/pagina.cfm?usz=2&uid=539&umn=75&smn=107

Federica

Thank you everyone for all your help!  

Actually @Preslav I. Peev i have been worked there :)