Semibalanus balanoides - Acorn barnacle - Gewone zeepok

Semibalanus balanoides  (Linnaeus, 1767)

Acorn barnacle - Gewone zeepok

Neeltje Jans - Getijdenpoel, the Netherlands, 13-1-2019. Specimens A: the more rough specimens with a green-yellow growth; the smooth specimens are Austrominius modestus.

Neeltje Jans - Getijdenpoel, the Netherlands, 13-1-2019. Specimens A: the more rough specimens with a green-yellow growth; the smooth specimens are Austrominius modestus.

Neeltje Jans - Getijdenpoel, the Netherlands, 13-1-2019. Specimens A: the more rough specimens with a green-yellow growth; the smooth specimens are Austrominius modestus.

Salvage, Newfoundland, Canada, 4-8-2010.

Salvage, Newfoundland, Canada, 4-8-2010.

Neeltje Jans - Vluchthaven, the Netherlands, 8-7-2010. On Carcinus maenas (Shore crab - Strandkrab).

Neeltje Jans - Vluchthaven, the Netherlands, 8-7-2010.

Zeelandbrug, the Netherlands, 7-6-2016. Specimens B on Carcinus maenas (Shore crab - Strandkrab).

Zeelandbrug, the Netherlands, 7-6-2016. Specimens B on Carcinus maenas (Shore crab - Strandkrab).

Dreischor - Kokrif, the Netherlands, 25-4-2018.

Oostvoorne, the Netherlands, 27-1-2012. Washed ashore on a plastic container.

Oostvoorne, the Netherlands, 27-1-2012. Washed ashore on a plastic container.

Oostvoorne, the Netherlands, 27-1-2012. Washed ashore on a plastic container.

With thanks to Marco Faasse for the identification or confirmation of the species (7-5-2025: "although 100% identification is not possible without removing the animal and examining it in detail").

Amphibalanus improvisus - Bay barnacle - Brakwaterpok

 Amphibalanus improvisus  (Darwin, 1854)

Bay barnacle - Brakwaterpok

Terneuzen - Uitstroomdelta zeewaterkoeling, the Netherlands, 30-4-2025. Specimens A.

Terneuzen - Uitstroomdelta zeewaterkoeling, the Netherlands, 30-4-2025. Specimens A. Bottom left: Diadumene lineata (Green anemone - Groene golfbrekeranemoon).

Burghsluis - Oost, the Netherlands, 15-2-2024.

't Koepeltje, the Netherlands, 15-8-2012. On Carcinus maenas (Shore crab - Strandkrab).

Dreischor - Gemaal, the Netherlands, 2-7-2020. On Carcinus maenas (Shore crab - Strandkrab).

Neeltje Jans - Vluchthaven, the Netherlands, 8-7-2010. On Carcinus maenas (Shore crab - Strandkrab).

Dreischor - Kokrif, the Netherlands, 6-7-2021. On Hemigrapsus takanoi (Brush-clawed shore crab - Penseelkrab).

With thanks to Marco Faasse for the identification or confirmation of the species (7-5-2025: "although 100% identification is not possible without removing the animal and examining it in detail").

Sacculina carcini - Krabbenzakje

Sacculina carcini  Thompson, 1836

Krabbenzakje 

't Koepeltje, the Netherlands, 20-7-2019. Specimen on Carcinus maenas (Shore crab, Green crab - Strandkrab).

Scharendijke, the Netherlands, 25-6-2014. Specimen on Carcinus maenas (Shore crab, Green crab - Strandkrab).

Putti's Place, the Netherlands, 15-6-2019. Specimen on Carcinus maenas (Shore crab, Green crab - Strandkrab).

Zeelandbrug, the Netherlands, 25-8-2018. Specimen on Carcinus maenas (Shore crab, Green crab - Strandkrab).

Ponton de la Bordelaise - Phare, Étang de Thau, France, 10-9-2021. Two specimen on Carcinus aestuarii  (Mediterranean green crab -  Mediterrane strandkrab). 

Belone belone - Garfish - Geep

Belone belone   (Linnaeus, 1760)

Garfish - Geep 

Playa Chica, Puerto del Carmen, Lanzarote, 3-3-2016. Shoal of circa 15 specimens.

Playa Chica, Puerto del Carmen, Lanzarote, 3-3-2016. Montage of a shoal of circa 15 specimens.

Playa Chica, Puerto del Carmen, Lanzarote, 3-3-2016. Shoal of circa 15 specimens.

Neeltje Jans - getijdenpoel, the Netherlands, 4-6-2019. Specimen A.

Neeltje Jans - getijdenpoel, the Netherlands, 4-6-2019. Specimen A.

Neeltje Jans - getijdenpoel, the Netherlands, 4-6-2019. Specimen A.

Neeltje Jans - getijdenpoel, the Netherlands, 4-6-2019. Specimen A.

Neeltje Jans - getijdenpoel, the Netherlands, 4-6-2019. Specimen A.

Neeltje Jans - getijdenpoel, the Netherlands, 4-6-2019. Specimen A.

Neeltje Jans - getijdenpoel, the Netherlands, 4-6-2019. Specimen A.

Neeltje Jans - getijdenpoel, the Netherlands, 4-6-2019. Specimen A and Carcinus maenas (Shore crab, Strandkrab).

Neeltje Jans - getijdenpoel, the Netherlands, 4-6-2019. Caligus species (soort Visnijntje) on specimen A.

Gorishoek, the Netherlands, 9-5-2020. Specimen B.

Gorishoek, the Netherlands, 9-5-2020. Specimen B.

Sthenelais boa - Boa-shaped keelworm - Reuzenzeerups

Sthenelais boa (Johnston, 1833)

Boa-shaped keelworm - Reuzenzeerups

Neeltje Jans - Getijdenpoel, the Netherlands,  4-6-2019. In vitro photo 8-6-2019. Specimen A, L: 77mm, D: 4.1mm.

Neeltje Jans - Getijdenpoel, the Netherlands,  4-6-2019. In vitro photo 8-6-2019. Specimen A.

Neeltje Jans - Getijdenpoel, the Netherlands,  4-6-2019. In vitro photo 8-6-2019. Tail of specimen A.

Neeltje Jans - Getijdenpoel, the Netherlands,  4-6-2019. In vitro photo 8-6-2019. Specimen A.

Goudzwaardweg, the Netherlands, 4-6-2016. In vitro photo 8-6-2016. Near dead, specimen B.

Goudzwaardweg, the Netherlands, 4-6-2016. In vitro photo 8-6-2016. Near dead, specimen B.

Goudzwaardweg, the Netherlands, 4-6-2016. In vitro photo 8-6-2016. Near dead, specimen B showing eggs.

Goudzwaardweg, the Netherlands, 4-6-2016. In vitro photo 8-6-2016. Near dead, specimen B losing scales and hairs.

Goudzwaardweg, the Netherlands, 4-6-2016. In vitro photo 8-6-2016. Scale of specimen B.

Goudzwaardweg, the Netherlands, 4-6-2016. In vitro photo 8-6-2016. Scale of specimen B.

Goudzwaardweg, the Netherlands, 4-6-2016. In vitro photo 8-6-2016. Scale of specimen B.

Goudzwaardweg, the Netherlands, 4-6-2016. Montage of 14 different in vitro photos of scales of specimen B, 8-6-2016. Artwork In Vitro 10 - Ontbinding.

Jacobahaven, the Netherlands, 16-5-2026.

Zeelandbrug, the Netherlands, 20-3-2020. Carcinus maenas eating S. boa.