This is a Japanese dish called odori-don.
A live squid with its head removed is served on top of a bowl of sushi rice, accompanied by sashimi prepared from the head (usually sliced ika (squid) and ika-kimo (squid liver)) as well as other seafood. Seasoned soy sauce is first poured on top of the squid to make it “dance”.
AGHHHH!! Gak! That is just about the freakiest thing I’ve ever seen. Delicious torture! (via mlkshk)