#4872 · 🪼 jellyfish, starfish, worms & co

Stalked Sea Squirt

🇳🇱 Japanse knotszakpijp ·Styela clava

🪼 Jellyfish, starfish, worms & co 📍 in the Netherlands (introduced)

10 photos from iNaturalist (Creative Commons) · credits & licences

1. © Lisa Biasillo · CC BY-NC 4.0
2. © Alex Shure · CC BY-NC 4.0
3. © Damon Tighe · CC BY-NC 4.0
4. © Robin Gwen Agarwal · CC BY-NC 4.0
5. © Clinton Duffy · CC BY-NC 4.0
6. © Alex Bairstow · CC BY-NC 4.0
7. Dreischor, Frans Kok rif:© Glenn Biscop · CC BY-NC 4.0
8. Grevelingen, Brouwershaven, Zeeland, NL:© no rights reserved · CC0
9. Zeeuwse meren, 158_13_400, NL:© Marjolein Vereijken · CC BY-NC 4.0
10. Schouwen-Duiveland, Netherlands:© Dennis Rabeling · CC BY-NC-ND 4.0

what is it?

The stalked sea squirt ( Styela clava ), also known as the club sea squirt, club tunicate, Asian tunicate, leathery sea squirt or rough sea squirt, is a solitary, hermaphroditic, ascidian tunicate that is native to the Pacific coast of Asia, ranging from the Sea of Okhotsk to Japan, Korea and northeast China. It has been introduced widely around the world such as off Australia, New Zealand, both coasts of North America, and Europe. It is considered invasive...

base stats

NL sightings 56iNaturalist, research grade
worldwide 1,700iNaturalist observations

Bars compare against all animals on log scales: up to 300,000 Dutch and 600,000 worldwide sightings (the most-seen species), 150 t (blue whale), 30 m and 400 years (Greenland shark).

fun facts

Spotted 56 times in the Netherlands on iNaturalist: the #26 most seen of the jellyfish, starfish, worms & co in NL.
1,700 observations worldwide on iNaturalist.
Scientifically named in 1882 (144 years ago).
Not originally Dutch: it was introduced to the Netherlands.