Ectopleura larynx - Flower head polyp - Gorgelpijppoliep

Ectopleura larynx   (Ellis & Solander, 1786)

Flower head polyp - Gorgelpijppoliep

Borssele - filterchannel powerplant, the Netherlands, 30-8-2015. In vitro photo specimen A, 30-8-2015.*

Borssele - filterchannel powerplant, the Netherlands, 30-8-2015. In vitro photo specimen A, 30-8-2015.*

Borssele - filterchannel powerplant, the Netherlands, 30-8-2015. In vitro photo specimen A, 30-8-2015.*

Borssele - filterchannel powerplant, the Netherlands, 26-7-2016.

Borssele - filterchannel powerplant, the Netherlands, 22-7-2018. In vitro photo specimens B.**

Borssele - filterchannel powerplant, the Netherlands, 22-7-2018. In vitro photo specimens B.**

* Marco Faasse about the identification: The stalks look like Ectopleura larynx, but I don't see any branches. It must be E. larynx in an unusual form. The exotic E. crocea occurs in large parts of the world, but has slightly different details of the gonophores.
** Identification by Marco Faasse.

Polybius dioscurus - Atlantic grey swimming crab - Atlantische grijze zwemkrab

Polybius dioscurus  García-Raso, d'Udekem d'Acoz, Moukrim, Schubart & Cuesta, 2024

Atlantic grey swimming crab - Atlantische grijze zwemkrab

Westhinder - Oosthinder bank, North Sea - Belgium*, 16-8-2023. In vitro photo specimen A, dead male crab (probably deceased by dredging), carapace width 34 mm, with Electra pilosa (Hairy sea-mat - Harig kantmosdiertje) and remnants of Ectopleura larynx (Flower head polyp - Gorgelpijppoliep), 23-8-2023.

Westhinder - Oosthinder bank, North Sea - Belgium*, 16-8-2023. In vitro photo specimen A, 23-8-2023.

Westhinder - Oosthinder bank, North Sea - Belgium*, 16-8-2023. In vitro photo specimen A, with Electra pilosa (Hairy sea-mat - Harig kantmosdiertje), 23-8-2023. Click here for detail Electra.

Den Osse - Nieuwe Kerkweg, the Netherlands, 13-6-2023. Specimen B.

Den Osse - Nieuwe Kerkweg, the Netherlands, 13-6-2023. Specimen B.

Den Osse - Nieuwe Kerkweg, the Netherlands, 13-6-2023. Specimen C.

Den Osse - Nieuwe Kerkweg, the Netherlands, 13-6-2023. Specimen C.

Den Osse - Nieuwe Kerkweg, the Netherlands, 13-6-2023. Specimen C.

Den Osse - Nieuwe Kerkweg, the Netherlands, 13-6-2023. Specimen C.

Brouwersdam - Noord, the Netherlands, 23-9-2023. In vitro photo, female specimen D (underneath male), 26-12-2023.

Brouwersdam - Noord, the Netherlands, 23-9-2023. In vitro photo female specimen D, 18-2-2024.

* Collected with the VLIZ research vessel RV Simon Stevin, beam trawl track 1, coordinates: start 51° 30.360’ N – 2° 39.047’ E - stop 51° 31.539’ N – 2° 39.384’ E

Berghia verrucicornis

Berghia verrucicornis  (A. Costa, 1867)

Strada Costiera, Trieste, Italy, 6-9-2017. In vitro photo specimen A, L: 9 mm, 6-9-2017.

Strada Costiera, Trieste, Italy, 6-9-2017. In vitro photo specimen A, 6-9-2017.

Strada Costiera, Trieste, Italy, 6-9-2017. In vitro photo specimen A, 6-9-2017.

Strada Costiera, Trieste, Italy, 6-9-2017. In vitro photo specimen A, 6-9-2017.

Strada Costiera, Trieste, Italy, 3-9-2023. In vitro photo specimen B, L: 14 mm, 3-9-2023.

Strada Costiera, Trieste, Italy, 3-9-2023. In vitro photo specimen B, 3-9-2023.

Strada Costiera, Trieste, Italy, 3-9-2023. In vitro photo specimen B, 3-9-2023.

Strada Costiera, Trieste, Italy, 3-9-2023. In vitro photo specimen B, 3-9-2023.

Strada Costiera, Trieste, Italy, 3-9-2023. In vitro photo specimen B, 3-9-2023.

Strada Costiera, Trieste, Italy, 3-9-2023. In vitro photo specimen B, 3-9-2023.

Strada Costiera, Trieste, Italy, 6-9-2017. 

Strada Costiera, Trieste, Italy, 3-9-2023. With Ectopleura larynx  (Flower head polyp - Gorgelpijppoliep).

Catriona aurantia - Gorgelpijpknotsslak

Catriona aurantia  (Alder & Hancock, 1842)

Gorgelpijpknotsslak 

Synonym: Cuthona gymnota, Catriona gymnota, Tenellia aurantia

Westkapelle, the Netherlands, 29-4-2017. In vitro photo specimen A, L: 26 mm, 2-5-2017.

Westkapelle, the Netherlands, 29-4-2017. In vitro photo specimen A, 8-5-2017.

Westkapelle, the Netherlands, 29-4-2017. In vitro photo specimen A, 8-5-2017.

Westkapelle, the Netherlands, 29-4-2017. In vitro photo specimen A, 8-5-2017.

Westkapelle, the Netherlands, 29-4-2017. In vitro photo specimen A, 2-5-2017.

Westkapelle, the Netherlands, 4-2-2014. In vitro photo, 5-2-2014.

Heerenkeet - Flaauwers, the Netherlands, 27-5-2013. In vitro photo, 27-5-2013.

Borssele - filterchannel powerplant, the Netherlands, 30-8-2015. In vitro photo, specimen on Ectopleura larynx (Flower head polyp - Gorgelpijppoliep), 10-9-2015. 

Westkapelle, the Netherlands, 29-4-2017. In vitro photo of egg string of specimen A, L: 8 mm, 6-5-2017.