There is a Japanese dish in which a dead octopus "dancing" on a plate Bashny.Net

This dish - a traditional Japanese «ika-don», which is in the restaurant Ikkatei Tabiji prepared in a special way and called the "octopus dancing in the rice» (odori-don).

The point is that the octopus is dead and ready for use, but when it is poured soy sauce contained in the sauce sodium reacts with the cells of the octopus, bringing the released free ions, they "tickle" the nerves tentacles, causing an animal " dance "on the plate.

Octopuses and squid nerve fibers without myelin sheaths. They are like the bared wires on the body, only "work" at the expense of ion exchange. If you disrupt the ionic balance on their surface, for it will impulses that make the muscles to contract.

Source: www.interest-planet.ru

via factroom.ru