Biosecurity...
This country needs some some... the smart money has to be that its come in on imported fishing bait... Got to say though If its got into three known sites already the chances of stopping it have to approach zero.
The Welsh have taken to nets and catfood to battle a Caspian crustacean invasion that could have a "devastating impact on native species". According to the BBC, the 3cm Dikerogammarus villosus shrimp has over the last decade made its way from the Black and Caspian seas via arteries such as the Danube and Rhine Canal. …
All this about a Caspian sea killer and you missed the opportunity for a tech angle by referencing the Caspian Sea Monster, more formally known as the Ekranoplan. This 'wing in ground effect' vehicle 'flew' only metres from the surface of the water at up to 500 knots, which by all accounts was very stressful for the pilot and decidedly dodgy if you were in a small boat in the flight path.
The Soviets are getting their revenge on the decadent West even decades after the fall of the wall.
Might not have come in on bait as far as I know they aren't sure how they got there, but quite a lot of aquatics animals can spread by ding things like having sticky eggs to attach to wading birds and such. It can take massive swings in salinity as well so its hard to say how it got here.
Technically its not a shrimp either.
I have a hard time believing #
that tiny shrimp pose a real threat to huge Wales.
Oh, I don't know, some little things called "zebra mussels" have virtually taken over the entire North American Great Lakes, clogging water intake pipes, slowing freighters, fouling both commercial and recreational fishing equipment etc. Just because they are tiny doesn't mean they can't cause really huge problems.
Now we're dealing with round-headed gobys, two species of Asian carp and several other nasties that either kill native species directly or kill the microscopic plankton upon which they feed.