My parents live in Dana Point, so some favorites are: Dizz's, 230 Forest, Luciana's, and Ti Amo for fancier places, and Thai This and Antoine's for casual. If you venture beyond Laguna, try in Crystal Cove Blue Fin, Sage and Javier's which just reopened there. Have fun and happy eating!
Lots of good choices.
Stonehill Tavern is the tops in quality and price. http://www.michaelmina.net/stonehill/index.html
Vine in San Clemente is excellent www.vinesanclemente.com
as is Gemmell's in Dana Point Harbor www.gemmellsrestaurant.com.
Savannah Chop House is right up the hill from the Harbor (2 mi) and is also good for steaks. www.culinaryadventures.com
Very nice wine bar in town called Purple Feet www.purplefeetwines.com
For more casual fare, take a walk around the Harbor and there are quite a few choices.
such as Harpoon Henrys & Wind and Sea. www.windandsearestaurants.com
Best Mexican is Olamendi's (actually couple miles south in Capo Beach) http://originalolamendis.com/
Best Sushi is Gen Kai. Sorry no website. but it's on PCH
Rambling but that kind of covers it.
When we lived in Dana Point, we loved Marios by the Sea for Italian. It is not really by the sea though :) it is up the hill, Golden Lantern at Del Avion. Also, good mexican at Olamendi's down the coast in San Clemente, right on the beach, and Carlos right in Dana Point on PCH