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In these murky waters
they rely on sonar
to navigate and hunt.
They work together
to drive shoals of fish into the shallows.
Botos are highly social
and in the breeding season
there is stiff competition for mates.
The males hold court in a unique way.
They pick up rocks in their jaws
and flaunt them to their attending females.
Maybe each male is trying to show
how strong and dexterous he is
and that he therefore is the best father
a female could have for her young.
Successful displays lead to mating.
Even for giant rivers like the Amazon
the journey to the sea
is not always smooth or uninterrupted.
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