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Biologist Investigates River Shark Mystery | National Geographic


the attacks come with terrifying
regularity here in the world’s largest
mangrove swamp in the Bay of Bengal
villagers trudged through a murky River
to net shrimp larvae locals speak of a
monster that attacks underwater without
warning it happened to Sumitra mystery
anybody don’t mind I want to cuddle it
was an ordinary day I woke up and then i
went for fishing in the river i was
pulling my net in the water for three
hours when the animal bit me it was like
a sharp razor cut I pushed the animal
and it immediately took off my hand I
swam to the shore and saw the blood
running from my hand
many here bear the scars of these
frightening encounters National
Geographic biologist rocky strong an
adventurer Fabien Cousteau have come to
investigate rocky believes the culprit
might be a bull shark
they set the bait
why this spot versus any other this is a
place where two major rivers converge
and even more importantly all the locals
say this is a good spot for sharks
hahaha something is biting
but the researchers can’t make a catch
well no no really even good good bites I
have to say it’s the longest time I’ve
spent fishing without any results at all
later they’re led to a market were two
small sharks are for sale so in here all
yours I’m rapid goodness gracious ah
this is this is a brand new pup by the
look of the umbilical marks these pups
were newborns to determine the species
the researchers count t 1 2 5 6 7 8 9
and 10 that’s our fish it’s conclusive
these are bull sharks as rocky suspected
this sometimes aggressive species has
been documented in rivers throughout the
world Rocky’s theory is that bull sharks
developed the ability to live
temporarily in fresh water so that
females can give birth where their young
are safest from other sharks but maybe
it’s after giving birth that the females
had further up river in search of food
sometimes encountering people why of the
river versus say further down the coast
or deeper into the ocean because they
can because they can leave all their
competitors behind and be king of the
hill up inside a an environment that
they’re very good at dealing with and
other sharks just aren’t
both shark and human are seeking food in
these waters to help them survive
in that competition sometimes lead to
dangerous clashes
you
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