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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, 2628 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, Robertopitt, RobertoTR, Robertozan, 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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avatarsupporter
sent on October 02, 2019 (19:26) | This comment has been automatically translated (show/hide original)

Looks like a carnival carousel. But how much I like it, very good. Never before have I noticed jellyfish, even of consistent beach sizes. Next so that we make clean slate for our children and grandchildren. I'm ashamed to belong to the human race. :-(
bye gios ;-)

avatarsenior
sent on October 02, 2019 (23:04) | This comment has been translated

Very nice!

avatarsenior
sent on October 02, 2019 (23:44) | This comment has been automatically translated (show/hide original)

Beautiful photo and document, important to know certain things
exemplary of great beauty, beautiful colors
tantitanti compliments Sergio
a greeting
Pierpaolo

avatarsenior
sent on October 03, 2019 (8:30) | This comment has been automatically translated (show/hide original)

Beautiful shot with fantastic colors
Mary

avatarsenior
sent on October 03, 2019 (14:39) | This comment has been automatically translated (show/hide original)

very nice and colorful woow.
Hello Lu. :-P

avatarsenior
sent on October 03, 2019 (16:22) | This comment has been automatically translated (show/hide original)

Hello Paul.
Thank you very much for your comment.
These jellyfish are quite beautiful in their colors and in their form
Hello :-P
Sergio

avatarsenior
sent on October 03, 2019 (16:26) | This comment has been automatically translated (show/hide original)

Wow! Claudio, this comment of yours makes me blush!
Thank you very much, fortunately they move slowly and I managed to make some shots, they are beautiful and particular from all angles, this image convinced me among all for the presence of the avant-garde sown between its coils.
Thank you so much for your beautiful words.
Hello :-P
Sergio

avatarsenior
sent on October 03, 2019 (16:29) | This comment has been automatically translated (show/hide original)

Thank you very much Roberto, happy you enjoyed this shot, chosen precisely for the contemporary presence of the hidden fish.
Thank you for your beautiful words and congratulations, always welcome.
Hello :-P
Sergio

avatarsenior
sent on October 03, 2019 (16:31) | This comment has been automatically translated (show/hide original)

Thank you Raimondo, happy for your appreciation in snap and caption.
Recently, this variety of jellyfish has stimulated my curiosity
Hello
Sergio

avatarsenior
sent on October 03, 2019 (16:33) | This comment has been automatically translated (show/hide original)

Hello Andrea, glad you enjoyed this shot. Yes, the presence of the little fish was a surprise, in the water I did not realize, too small.
Thank you so much for congratulations and comment
Hello :-P
Sergio

avatarsenior
sent on October 03, 2019 (16:33) | This comment has been automatically translated (show/hide original)

Hello Corrado, pleased for your positive comment on this underwater photo.
Hello :-P
Sergio

avatarsenior
sent on October 03, 2019 (16:42) | This comment has been automatically translated (show/hide original)

I had already read being harmless, but I wasn't sure to remember well, so at the time of the shot, I always kept myself at a certain safe distance.
Then at home, looking at the shot, I documented myself better, making sure I was harmless and so I discovered the symbiosis between fish and jellyfish, which I did not know.
I'm glad you liked this image and thank you very much for your words and compliments.
A dear greeting :-P
Sergio

avatarsenior
sent on October 03, 2019 (17:52) | This comment has been automatically translated (show/hide original)

Hi Nadia, I'm glad you enjoyed this underwater photo, this jellyfish actually has beautiful colors.
Thank you very much for your words and congratulations
Good evening :-P
Sergio

avatarsenior
sent on October 03, 2019 (17:53) | This comment has been automatically translated (show/hide original)

Stunning image with wonderful colors, with the small guest that accompanies it, evidently knows the non-dangerousness.
Many compliments dear Sergio :-)
Hello

avatarsenior
sent on October 03, 2019 (18:03) | This comment has been automatically translated (show/hide original)

Thank you Elio, thank you so much for your beautiful words, I'm glad you enjoyed both snap and caption.
A very dear greeting :-P
Sergio

avatarsenior
sent on October 03, 2019 (18:04) | This comment has been automatically translated (show/hide original)

Hello Eus, I am very pleased with your appreciation to this underwater photo.
Thank you so much for your beautiful comment
Hello :-P
Sergio

avatarsenior
sent on October 03, 2019 (18:06) | This comment has been automatically translated (show/hide original)

Hello William, a diving shot of our seas. I'm glad you liked it.
Thank you so much for comment ingesmaning.
Hello
Sergio

avatarsenior
sent on October 03, 2019 (18:10) | This comment has been automatically translated (show/hide original)

Sergio, I'm glad you liked this image and that you found the caption interesting. I have been intrigued by the recent appearance of these harmless jellyfish, but they always put a little fear.
Thank you so much for your words and congratulations
Hello Sergio. :-P
Sergio

avatarsenior
sent on October 03, 2019 (18:12) | This comment has been automatically translated (show/hide original)

Julian, I'm happy with your appreciation of this image and its caption.
Thank you very much for your passage
Hello :-P
Sergio

avatarsupporter
sent on October 03, 2019 (18:31) | This comment has been translated

Very nice!


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