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Pennaria disticha / Halocordyle disticha


Animalia Kingdom Phylum: Cnidaria Class: Hydrozoa Order: Hydroida Family: Pennariidae Genre: Halocordyle Species (s): disticha This species forms colonies in the shape of a feather, with regular branching. The general color is light due to the whitish tone of the polyps, although the structure of the colony is beige or dark brown. They measure up to 25 centimeters in height. The polyps are oval and pear-shaped and widely spaced on the surface of the branches. They have a crown of between 10 and 18 filiform tentacles. With the stinging cells of these tentacles it catches the small plankton on which it feeds.


It inhabits shallow rocky edges, in areas of strong hydrodynamism, and cave entrances, well attached to the substrate. Island in mediterranean rocky area. Isla Plana (Murcia).


Its life cycle has two reproductive phases, one asexual and the other sexual through free-living jellyfish, with external fertilization. In one day, the embryo transforms into a free-living planula larva, which can eventually attach to the substrate and be the origin of a new colony.

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Leuba Ridgway
Leuba Ridgway a month ago

Well deserved SOTW -Congratulations Eulalia !

Saturniidae27 a month ago

Congrats Eulalia :-)

Neil Ross
Neil Ross a month ago

Congratulations, Eulalia. A wonderful STOW.

DrNamgyalTSherpa a month ago

Congrats Eulalia for the STOW!

Brian38 a month ago

Congrats, Eulalia.

Ornithoptera80 a month ago


Amazing spotting Eulalia,congrats on the well deserved SOTW and thanks for sharing

MichaelS a month ago

Hi eulalia rubio,

Your Hydrozoan spotting has been voted Spotting of the Week!

Mark Ridgway
Mark Ridgway 2 months ago

Your spotting has been nominated for the Spotting of the Week. The winner will be chosen by the Project Noah Rangers based on a combination of factors including: uniqueness of the shot, status of the organism (for example, rare or endangered), quality of the information provided in the habitat and description sections. There is a subjective element, of course; the spotting with the highest number of Ranger votes is chosen. Congratulations on being nominated!

Deny 3 months ago


Leuba Ridgway
Leuba Ridgway 3 months ago

I always assumed that they were sturdier. Sodelicate and beautiful - thanks for sharing Eulalia.

SukanyaDatta 3 months ago


eulalia rubio
Spotted by
eulalia rubio

Cartagena, Región de Murcia, Spain

Spotted on Aug 20, 2020
Submitted on Aug 20, 2020

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