Other observations of
mother and calf pairs in the Northern Hemisphere have
reported a predominance of counterclockwise swimming
. Other studies have also noted the counterclockwise
predominance of swimming directions; however,
one study of 2 dolphins showed a predominant clockwise
swimming direction, while 3 of 13 dolphins and 1
of 4 dolphins were observed to swim predominantly
clockwise in other studies. Despite the few exceptions, the
predominance of counterclockwise swimming by cetaceans
in the Northern Hemisphere is clear.