Yobuko squid is famous from Saga. We found it on the menu in a restaurant in Fukuoka. It is served while the tentacles are still moving. Great texture and a rich flavor. We enjoyed it with some wasabi and soy sauce.
If you touched the skin, you could see the color change. There was a fluorescent blue and green color that reminded me of the Northern Lights.
We had this at "Waza Waza" in Fukuoka. (Hakata-ku, Hakata Eki Higashi 2-1-27)
http://wazafood.jp/
