A South American river dolphin uses branches, weeds and lumps of clay to woo the opposite sex and frighten off rivals, scientists have discovered.
Researchers observed adult male botos carrying these objects while surrounded by females, and thrashing them on the water surface aggressively. Writing in the journal Biology Letters, they say such behaviour has never before been seen in any marine mammal.
The boto lives in only two rivers, and numbers are thought to be declining. A group of British and Brazilian researchers studied the dolphin's unique courtship behaviour over three years in the Mamiraua Reserve, a flooded rainforest area on the Amazon.
The beauty of the nature!
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