the blue shark
it travels over 8 000 kilometers a year
riding on the currents supported by its
broad wing-shaped fins
this one may not have eaten for two
months
but the currents can carry promising
traces of fatty oils from many
kilometers away and will lead it to its
next meal
[Music]
after days of travel the smell of food
gets stronger
[Music]
a dead whale recently struck by a ship
this could be a real feast
but the blue shark must be cautious
great white sharks
ten times heavier than a blue
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a highly possessive around a whale
carcass
great whites are eager to feed on
energy-rich whale blubber
which we now know forms a major part of
their diet
[Music]
once the great white has had its fill
smaller sharks like the blue shark
tackle what’s left of a carcass
as the oils from this dead whale spread
more widely more and more blue sharks
appear
[Music]
within days the carcass will be stripped
of its blubber
then no longer kept buoyant by its oil
it will sink
into the depths below
the blue with its reserves of fat
replenished can now survive for another
two months without eating
