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  1. Galleries
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  3. Underwater Photo
  4. » Cassiopeia jellyfish

 
Cassiopeia jellyfish...

mare, mare, ancora mare!!!

View gallery (23 photos)

Cassiopeia jellyfish sent on October 01, 2019 (16:19) by Sergio Bartolomeo. 148 comments, 3596 views. [retina]

1/250 f/4.2, ISO 125, hand held. Messina, Italy.

Cambiamenti climatici, pesca intensiva, impoverimento delle specie ittiche che si nutrono di plancton: sono tanti i fattori che hanno spinto la bellissima, quanto innocua, medusa Cassiopea Mediterranea (Cotylorhiza tuberculata) a comparire nei nostri mari. Sono stati numerosi gli avvistamenti, specie nell'ultimo periodo, di questo splendido esemplare nelle nostre acque, prevalentemente tra il messinese e le isole Eolie. Questa specie, che raggiunge i 30 cm di diametro, presenta un caratteristico ombrello a forma di disco bianco, con una gobba rotonda e gialla al centro (sembra un uovo all'occhio di bue). Il margine è tipicamente frastagliato, di colore giallo o talvolta verdastro per la presenza di zooxantelle: alghe unicellulari che assorbono il diossido di carbonio liberato dall'ospite e che, in cambio, gli forniscono particolari sostanze nutrienti. Questa medusa vive a pochi centimetri di profondità, circondata da piccoli pesci che usano i suoi tentacoli per trovare il nutrimento necessario. Tipica la presenza di piccoli avannotti. Nonostante le dimensioni, impressionanti rispetto alle classiche meduse, la Cassiopea non è urticante e, vista la sua importanza ecologica (fungono da filtro per l'acqua di mare), gli esperti consigliano vivamente di non catturarle! -------Tutte le foto contenute in queste gallerie sono copyright Sergio Bartolomeo e non possono essere utilizzate in alcuna forma senza il consenso dell'autore.



View High Resolution 15.9 MP  

118 persons like it: Agata Arezzo, Albertopantellini, Albieri Sergio, Alcenero, Alejandro Colombini, Alessandro Traverso, Alessandro57, Alpha_A5100, Andnol, Andrea Cacciari, Angelo959, Anouk, Antonio Dell'Aquila, Aringhe Blu, Arvina, Assox, Bal, Barbara Gatti Cocci, Canonitalia, Carlo Girola, Carlo Marchese, Caterina Bruzzone, Chiaravet, Claudio Cortesi, Claudio Cozzani, Claudio Ricci, Coradocon, Cris74, Darcy, Dede66, Delphinus, Diego96, Diodato Campagna, Eddie6630, Elfiche, Enrico F, Eus, Fabrizio Pocci, Fabrizios53, Federico_28, Fggalassi, Fiorenzo Sagoni, Franco Buffalmano, Fulvio Gioria, Gabbia65, Gabribocc, Gabriele Cavagna, Gast1, Germano58, Gianna.B., Ginno, Giorgio Occhipinti, Gios, Giovanni e Davide, Giulietta Cazzaro, Goodcaptain, Guerragaet, Guglielmo Toscano, Ilfruttodelpeccato, Immacolata Puli, Italo Carè, Jancuia, Jeant, Jerry Vacchieri, Jo., Lamahd, Lastpeanut, Latino Rosario, LucianoSerra.d, Lucio Pegoraro, Luigi Mossali, Lully, Magda69, Mamaroby, Marco Biancalani, Marco Neri, Marco Riccardi, MariangelaT, Marilù 04, Mario_61, Mau.., Maurizio Trifilidis, Mauro Monesi, Mirc, NadiaB, Nightflier, Nikp, Palmieri Raimondo, Paogar, Paolo P, Peppe Cancellieri, Phostech, PietroBettega, Pmax, Rendy L., Renzo Fermo, Roberto Carrano, Roberto Giancristoforo, RobertoTR, Robertozan, Roberty, Rodema, Ronda, Rosario Cafiso, Sasso, Savino P., Sergio 67, Simobati, Stefania Saffioti, Supercecc56, Susy Dan, Testarossa57, Valerio Pezzi, Valeriot, Vasile Gori, Vincenzo Sciumè, Werner, Zipablo




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avatarsenior
sent on May 16, 2021 (9:18) | This comment has been automatically translated (show/hide original)


avatarsenior
sent on May 17, 2021 (15:50) | This comment has been automatically translated (show/hide original)


avatarsenior
sent on September 05, 2021 (9:07) | This comment has been automatically translated (show/hide original)

beautiful capture and image, excellent composition

avatarsenior
sent on September 05, 2021 (9:13) | This comment has been automatically translated (show/hide original)

Thanks Nikp, I am glad for your appreciation to this image
Thank you very much for your nice comment
A salutone and good Sunday
Sergio

avatarsupporter
sent on November 03, 2021 (16:53) | This comment has been automatically translated (show/hide original)

How wonderful Sergio! What magnificent colors! 8-)

avatarsenior
sent on November 03, 2021 (20:34) | This comment has been automatically translated (show/hide original)

Thanks Claudio
Thank you very much, I'm glad for your beautiful comment to this image, glad you liked it
Greetings
Sergio

avatarsupporter
sent on May 20, 2022 (16:59) | This comment has been automatically translated (show/hide original)

Urca that jellyfish strabella. Congratulations 8-)

avatarsenior
sent on May 21, 2022 (17:33) | This comment has been automatically translated (show/hide original)

Thank you Bal
Thank you very much for your compliments and for the kind comment to this image. Glad you liked it
Greetings and have a good weekend
Sergio


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