FIRST AIRED: January 3, 2019

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Transcript

00:00:00
>>
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00:00:01
They might look harmless, but these Asian dates mussels are actually foreign invaders. And they could have an effect on Britain's native sea life, including its own oysters and mussels.>> They actually do look a little bit like dates,
LAUGH]>>
It's main tip to the West Pacific, but now the Asian date mussel has been spotted in the UK.
00:00:21
And Marine Biologist Peter Barfield warns that not likely to be a good thing.>> It forms these mats>> On the surface of the sediment. And that, obviously, denies seagrass growth for the areas that are covered. And also these species can attach to the larger seagrass as well.
00:00:42
Which can have a negative impact.>> Scientists don't know exactly how this new arrival will affect habitats of British wildlife. But invasive species tend to have dramatic impacts on ecosystems and global economies and can drive others that share their environments into extinction.
00:00:58