This video is about the pleated sea squirt, Styela plicata.
In the spring of 2008, the sea squirt species Corella eumyota (orange-tipped sea squirt) was found for the first time in the Netherlands. That was in the harbour of Burghsluis, at the Oosterschelde estuary.
In 2014 and 2015, it was also found at another Oosterschelde spot, Westbout.
So, this originally South American species seems to be spreading, but slowly.
Dear Kitty. Some blog 
I would imagine if a meta study was done to see the movement of many species this movement would be indication of many phenomena, including response to over fishing, global warming, to ocean acidification.
LikeLike
I think the most obvious cause is transoceanic ship traffic, bringing the animals with the ships.
LikeLike
Then it would be considered an invasive species which may be a correct designation if this species wasn’t seen previously in this location. Hopefully it will not be one that disrupts the food web in the area.
LikeLike
Yes, it is originally from South America. Its Dutch name translates as “Chilean sea squirt”.
LikeLiked by 1 person
Pingback: New lizard species discovered in Ecuador and Peru | Dear Kitty. Some blog
Pingback: Bar-tailed godwits feeding, video | Dear Kitty. Some blog
Pingback: Seahorse discovery in the Netherlands | Dear Kitty. Some blog
Pingback: Two-headed sea slug discovery off Malaysia | Dear Kitty. Some blog
Pingback: Shark beached on Schiermonnikoog island | Dear Kitty. Some blog
Pingback: British marine life surveyed by divers for conservation | Dear Kitty. Some blog
Pingback: Mysterious fossils in Dutch Oosterschelde estuary | Dear Kitty. Some blog
Pingback: Starfish beached, video | Dear Kitty. Some blog
Pingback: Good porcelain crab news | Dear Kitty. Some blog
Pingback: Small-spotted catshark swimming, video | Dear Kitty. Some blog
Pingback: Unusual lumpsucker behaviour | Dear Kitty. Some blog
Pingback: Lumpsucker fish video | Dear Kitty. Some blog
Pingback: Young cuttlefish changes its colour, video | Dear Kitty. Some blog
Pingback: Animals under water, video | Dear Kitty. Some blog
Pingback: Ruddy turnstones on dike, video | Dear Kitty. Some blog
Pingback: Velvet crab video | Dear Kitty. Some blog
Pingback: Sea slug, under water video | Dear Kitty. Some blog
Pingback: Seals in Dutch Oosterschelde estuary | Dear Kitty. Some blog
Pingback: Ruddy duck video | Dear Kitty. Some blog
Pingback: Sea snail video | Dear Kitty. Some blog
Pingback: Sea snail on video | Dear Kitty. Some blog
Pingback: New crab species in the Netherlands | Dear Kitty. Some blog
Pingback: Seahorses mating in Zeeland video | Dear Kitty. Some blog
Pingback: Monk parakeet video | Dear Kitty. Some blog
Pingback: Lumpsucker fish guards eggs, video | Dear Kitty. Some blog
Pingback: Cuttlefish lays eggs, video | Dear Kitty. Some blog
Pingback: Cabbage moth caterpillars hatch, video | Dear Kitty. Some blog
Pingback: Squid swimming in the Netherlands, video | Dear Kitty. Some blog
Pingback: Invertebrate-vertebrate animals’ relationship, new research | Dear Kitty. Some blog