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Star ascidian. Ascidia estrella

Botryllus schlosseri


The ascidian of size small usually associated in colonies that can reach large area. In the colonies may have degrees and divide the work: breathing, digestion ... They are basically sessile filter feeders; the water enters with food for oral siphon, it passes through a perforated pharynx where the food is retained and then goes to a cavity what communicating with the exterior by the atrial siphon. They live in shallow water. The star ascidian forms flat colonies embedded in some object such as plants, rocks, animals, artificial structures, etc.. They are formed by 3-12 individuals of 2 mm high, arranged such daisies or star-like around a common exhalent siphon. ---------------------------------------------------------------------------------------------------------------------------------------------------------------- Las ascidias de pequeño tamaño suelen asociarse en colonias que pueden alcanzar gran superficie. En las colonias puede haber grados y se reparten los trabajos: respiración, digestión... Básicamente son organismos sésiles filtradores; el agua entra con alimento por el sifón bucal, se introduce en una faringe perforada en la que queda retenido el alimento y después pasa a una cavidad que comunica con el exterior por el sifón atrial. Viven en aguas poco profundas. La ascidia estrella forma colonias planas que se incrustan en algún objeto como: plantas, rocas, animales, estructuras artificales, etc. Están formadas por 3-12 individuos de 2 mm de alto, dispuestos de tal forma que parecen estrellas o margaritas alrededor de un sifón exhalante común.


Shallow waters of the lagoon Mar Menor (Murcia).------------------------------------------------- Aguas someras de la Laguna del Mar Menor (Murcia). -----------------------------------------------They often grow on the leaves of Cymodocea nodosa, as in this case, a marine plant -not algae. ----------------------------------------------------------------------------------------------------------- Generalmente crecen en las hojas de Cymodocea nodosa, como en este caso, una planta marina (no algas).

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36 Comments (1–25)

eulalia rubio
eulalia rubio 10 years ago

Thanks, María.

Maria dB
Maria dB 10 years ago

What a cool spotting! Congratulations on your SOTD!

eulalia rubio
eulalia rubio 10 years ago

Thanks to all ;)

Carol Snow Milne
Carol Snow Milne 10 years ago

Beautiful and so unusual.

NuwanChathuranga 10 years ago

Congratulations !

RickLampman 10 years ago

Congratulations !! On SOTD Great Find :)

LuisStevens 10 years ago

Congrats Eulalia!

Sachin Zaveri
Sachin Zaveri 10 years ago


Wild Things
Wild Things 10 years ago

Nice spotting! Congrats on the SOTD!

eulalia rubio
eulalia rubio 10 years ago

Gilma Jeannette: I have added a short description of the ascidian. I wish this could help you a little. I hope that you find some in your next dive.

eulalia rubio
eulalia rubio 10 years ago

Thanks, António.

Congratulations on the SOTD, eulalia rubio.
I like it because I never seen anything like it and to tell you the truth I have no idea what it is!! but when I have some time I will go in a wild search that I am sure it will teach me lots!!

Beautiful capture Eulalia,congrats on the SOTD and thanks for sharing

eulalia rubio
eulalia rubio 10 years ago

Gracias, EnvUnlimited.

eulalia rubio
eulalia rubio 10 years ago

Thanks, Adarsha :)

Adarsha B S
Adarsha B S 10 years ago

A big big Congratulations Eulalia :) Such a valuable spotting :)

The MnMs
The MnMs 10 years ago

¡Enhorabuena por el SOTD! Bien merecido :-)

eulalia rubio
eulalia rubio 10 years ago

Thanks, Josep Maria, Reza, Marsya and Akshi.

eulalia rubio
eulalia rubio 10 years ago

Thanks, Marta. Yo no habría imaginado que este spotting podría tener éxito, para mí es muy normal porque estoy acostumbrada a verlos ¡cómo son las cosas!

eulalia rubio
eulalia rubio 10 years ago

Thank you very much, Yasser, is great news for me. Sometimes the little things how are you Squirts, is the surprise. Hugs to all PNoah team.

Josep Maria Fe
Josep Maria Fe 10 years ago

Fantástica la foto !!!!

Reza Hashemizadeh
Reza Hashemizadeh 10 years ago

Congratulations !

Marsya Christyanti
Marsya Christyanti 10 years ago

wow, cool :D congratulations!

Chamalka Dulmini
Chamalka Dulmini 10 years ago

congratulations Eula.

Yasser 10 years ago

Congrats Eula! These beautiful marine invertebrates were selected as Spotting of the Day! At first glance, I thought these were flowers. A great spotting of a fascinating and beautiful organism!


eulalia rubio
Spotted by
eulalia rubio

San Javier, Región de Murcia, Spain

Spotted on Sep 26, 2013
Submitted on Sep 26, 2013

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