Seasonally opened kitchen called "Kamanyu Meshi(蒲入めし)".
Each day they serve different and depends on days which kinds of fish you can get. Tables are set up outside which means you can eat in front of the sea :)
Price:2000yen/person. They accept cash payment only.
Reservation is necessary!
Call for reservation:0772-33-0266(Kamanyu-suisan蒲入水産, they can only speak Japanese...)
OPEN:11:00-14:00(closed on every Thursday)
At the moment, I don't know when is exactly the opening season for them this year(2014) so here is their opening season of 2013 for some of you prefer to estimate.
Season 2014:end of April to end of September(Closed between 1st-16th August)
Access:
*From Amanohashidate station(天橋立駅) take a bus for 1.5hrs(Bus fare:400yen/single) and get off at Kamanyu(蒲入).
*From Ine(伊根) central about 30mins bus ride.(Bus fare:200yen/single)
http://snoopy.blog.eonet.jp/photos/uncategorized/2008/09/10/ddl_xxqj.jpg
http://tabelog.com/restaurant/images/Rvw/18770/640x640_rect_18770380.jpg