In all cases of the behavior, it is performed by a single animal and the plume is used once; though it has been seen that simultaneous plumes can be created separately by other dolphins in the group.
It is performed by a single animal. This was in all cases of the behavior. The plume is used once;. This was in all cases of the behavior. Simultaneous plumes can be created separately by other dolphins in the group. This has been seen.