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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, 2627 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 04, 2019 (17:37) | This comment has been automatically translated (show/hide original)

Spectacular marine image, great caption. Hello David.

avatarsenior
sent on October 04, 2019 (18:55) | This comment has been automatically translated (show/hide original)

Thank you Franco, I'm glad you enjoyed this underwater photo.
Thank you so much and have a good weekend.
Sergio

avatarsenior
sent on October 04, 2019 (18:57) | This comment has been automatically translated (show/hide original)

Thank you Jean
I'm glad you liked this picture
Thank you so much for your beautiful words.
Happy weekend
Sergio

avatarsenior
sent on October 04, 2019 (18:58) | This comment has been automatically translated (show/hide original)

Hello David.
I'm glad you found this picture and its caption beautiful.
Thank you so much
Good weekend.
Hello
Sergio

avatarsenior
sent on October 04, 2019 (22:08) | This comment has been automatically translated (show/hide original)

Hello Sergio, the jellyfish you have filmed gives me amazement, nice to see in its folds a little fish that has fun. Beautiful image, beautiful composition, ditto for the colors taken, a shot not easy to do. I find it very interesting and instructive the caption you wrote, SUPER great
Hello, good evening and good weekend :-) :-)

avatarsenior
sent on October 04, 2019 (22:25) | This comment has been automatically translated (show/hide original)

Hello Giovanni and David, thank you very much for your beautiful comment on this underwater shot.
The semi-hidden minnow, I admit was a surprise, the more often I'd seen it circling around. This, among its folds was a discovery in the photo on monitor.
Shots in the water with such a machine present the difficulty of framing, between the swell and the movements of the subjects. To add that the vision on the small display, through the mask, and, in my case, without being able to wear glasses, is not easy.
Happy with the appreciation in the snap and caption, thank you very much.
Good weekend :-P
Sergio

avatarsupporter
sent on October 05, 2019 (14:21) | This comment has been automatically translated (show/hide original)

Beautiful jellyfish, perfect photo and excellent explanation.
CIAO, Gastone. ;-)

avatarsenior
sent on October 05, 2019 (14:32) | This comment has been automatically translated (show/hide original)

A beautiful catch, fascinating subject and very beautiful caption. Bravo and congratulations

avatarsupporter
sent on October 05, 2019 (14:45) | This comment has been automatically translated (show/hide original)

Beautiful image of a beautiful creature! Interesting caption.

avatarsenior
sent on October 05, 2019 (16:13) | This comment has been automatically translated (show/hide original)

Wonderful catch, top colors, great.
Hello
Roberto

avatarsenior
sent on October 05, 2019 (18:45) | This comment has been automatically translated (show/hide original)

Wow what colors, great..congratulations. ;-)

avatarsenior
sent on October 05, 2019 (22:32) | This comment has been automatically translated (show/hide original)

Beautiful and spectacular shot of this jellyfish from wonderful colors ... interesting as always and detailed the caption that completes the picture of this interesting shot a very dear greeting Sergio hello Roberto 8-)

avatarsenior
sent on October 06, 2019 (11:17) | This comment has been automatically translated (show/hide original)

Fabulous portrait of a colorful jellyfish!! Congratulations Sergio

avatarsenior
sent on October 06, 2019 (12:08) | This comment has been automatically translated (show/hide original)

Image and caption of strong impact.Congratulations Sergio.
jellyfish can be a problem, but it's a sight.
Hello,Fiorenzo

avatarsenior
sent on October 06, 2019 (14:14) | This comment has been automatically translated (show/hide original)

Hello Gastone, thank you so much for your appreciation to photo and caption. happy you liked them.
Good Sunday
Sergio

avatarsenior
sent on October 06, 2019 (15:37) | This comment has been automatically translated (show/hide original)

Thank you so much Alpha_A5100 for the compliments and the nice comment you have dedicated to this image.
Hello and good Sunday. :-P
Sergio

avatarsenior
sent on October 06, 2019 (15:41) | This comment has been automatically translated (show/hide original)

Thank you Susy Dan. Jellyfish in general are scary, because they are able to leave the mark of their encounter... clash, this however is not stinging and becomes more sympathetic ;-)
Thank you so much for your ride, glad you liked snap and caption.
Good Sunday :-P
Sergio

avatarsenior
sent on October 06, 2019 (15:44) | This comment has been automatically translated (show/hide original)

Hello Roberto, I'm glad you liked this image, taken multiple frames, in some you can better see its characteristic hat in the shape of "egg to the pan", chosen however this, for the presence of the little fish sown between its plinths.
Thank you so much for your nice comment.
Good Sunday :-P
Sergio

avatarsenior
sent on October 06, 2019 (15:48) | This comment has been automatically translated (show/hide original)

Hello Marco. For the colors I was helped by the clarity of the water, and by the shallow depth in which it moved, the sun thus illuminated it well.
Happy you enjoyed this shot.
Thank you very much, even for the always very welcome compliments.
Good Sunday. :-P
Sergio

avatarsenior
sent on October 06, 2019 (15:51) | This comment has been automatically translated (show/hide original)

Robertozan, thank you very much for your appreciation of this colorful jellyfish. I took advantage of the specimen in good health and the calm and clear water in which it moved.
Content you liked shot and caption.
Good Sunday :-P
Sergio


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