Why is the jellyfish population increasing
Are jellyfish taking over the ocean? | Ocean Wise
jellyfisher popping up and pressed the
ocean we've never seen them before and
that's not a good thing
luckily we've got someone on the case
dr. Lucas brats with the see around us
at the University of British Columbia
but you can call me doctors jellyfish so
it looks like there's five human
activities that may be leading to more
jellyfish in some places overfishing the
species that would normally compete with
or prey on jellyfish are being
overfished making it easier for
jellyfish to thrive even if you release
the pressure of overfishing as the fish
populations try to recover jellyfish
could eat the fish eggs and the fish
larvae and never let them get back to
that critical mass global warming
warming waters are creating new
territory for jellyfish to live and
reproduce many jellyfish will actually
increase their reproductive output in
warm waters simple to start making more
jellyfish invasive species thanks to
ships carrying them in ballast water
jellies are being transported to new
ecosystems and setting up camp jellyfish
they'll just thrive in a place like the
Black Sea and invasive jellyfish really
took over the whole ecosystem
eutrophication pollutants are entering
the ocean and creating dead zones when
everyone else leaves to find oxygen the
jellyfish move in jellyfish may be a
little bit more tolerant because they
have lower metabolism they can exchange
oxygen over the whole surface of their
body and in some cases they can even
store oxygen in their tissues like a
little scuba tank coastal development
developed and shaded coastlines are
often the perfect breeding grounds for
jellies when we go scuba diving and we
look underneath these anthropogenic
man-made structures they're discovered
in these jellyfish polyps which
ultimately probably leads to more
jellyfish in the ocean
hold on it sounds like jellyfish are
taking over the ocean should we be
worried I don't think you need to worry
that much should you be concerned yes
there are some pretty disturbing trends
in our ocean right now and jellyfish are
benefiting from some of those but if we
pay more attention to them monitor their
numbers perhaps there is some signal
that jellyfish are trying to tell us
about how the oceans are kink
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