If a grouper chases a fish into a crevice in the coral, it will sometimes go to where it knows a moray eel is sleeping and it will signal to the moray, "Follow me," and the moray will understand that signal.
Ako kijerna tjera ribu u pukotinu u koralju, ponekad će ići onamo gdje zna da murinka spava i signalizirat će murinki da je slijedi i murinka će razumjeti taj signal.