There is a crab named "Gazami". It means swimming crab. In Japan, it is also called “Watari Gani”. "Watari" is to go back and forth in the distance. "Gani" means crab.
There is a fish called "komai" that is caught in cold regions. This is dried komai.
There is a method of cooking fish called “Hiraki”. It is a cooking method in which the fish is flattened by cutting either the stomach or the back. Flatten and dry. You can eat it by roasting it a little. It's hard, but when you chew it, the flavor seeps out and it's delicious.
I used to have lunch at "Binchotanya Ikoru Ginza" in Ginza 1-chome, near Kyobashi, where my company used to be. Salted mackerel. Grilled dried mackerel. Is delicious!