Villagers were in panic after they woke up to
find the sea had turned blood red overnight.
Red waves rushed onto the beach, turning the
coastline into a terrifying scene in Shenzhen,in
China's Guangdong province
.
The algal blooms have been observed for
centuries starting with a written record from
British Columbia in Canada in 1793, but although
a natural occurrence they can also be increased
by man-made activities including pollution in
coastal areas, as well as by rising sea
temperatures.
As well as the ban on swimming, fishing
activities were also stopped. Shenzhen’s
Monitoring Centre for Marine Environment and
Resources experts said that they expected the
algae to disappear once the water temperature
had once again lowered.
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