 Mary carries a big stick and wields it imposingly on the younger female who tries to get away ...
|  she carries on with her threatening postures ...
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 chasing the younger one ...
|  ... chasing her into the water....
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 Presenting her back side with the trunk lowered is a submissive posture while Mary looks very angry.
|  The younger one, gets posession of the 'stick' and ....
|
 promptly throws it out into the deeper water. Mary extends her trunk over the younger one, which is a sign of dominance.
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