A lost world of animal life has been
discovered on the Antarctic sea floor, after an aquatic robot
found various new species clustered around hydrothermal vents.
These vents are fissures in the Earth's surface, which spew out
water rich in chemicals and heated to boiling temperatures by the
interior of the planet. Hydrothermal vents are home to animals
found nowhere else because they get energy by breaking down those
chemicals, instead of from the Sun.
Researchers led by the universities of Oxford and Southampton,
the National Oceanography Center, and British Antarctic Survey have
been able to explore the East Scotia Ridge deep beneath the
Southern Ocean, for the first time, with a Remotely Operated
Vehicle (ROV).
They found black smokers -- a type of vent that can reach
temperatures up to 382 degrees Celsius and spits out chemicals like
hydrogen sulphide. Here the team found "a hot, dark, lost world,"
said
research leader Alex Rogers of Oxford University's Department of
Zoology, "in which whole communities of previously unknown marine
organisms thrive."
Around these vents they found various new species. They
discovered an undescribed predatory seastar with seven arms, which
crawls across fields of stalked barnacles. Nearly 2,400 metres down
on the seafloor they found an unidentified octopus that's so pale
it's almost completely colorless.
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