Visitors are flocking to a zoo in Singapore to see the latest star attraction - two green polar bears.
Sheba and her 13-year-old son Inuka are supposed to have bright white fur like other polar bears, but in recent weeks have started to turn green.
Some people thought the zoo had painted them to get more visitors, but keepers have come up with an explanation.
They say tiny little plants called algae have attached themselves to the fur and that's why the bears are green.
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