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Blue lips

Blue lips
Photo Information
Copyright: Luciano Gollini (lousat) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 6595 W: 89 N: 15659] (65489)
Genre: Animals
Medium: Color
Date Taken: 2012-11-17
Categories: Crustacia
Camera: Pentax Optio WG2
Exposure: f/5.2, 1/160 seconds
More Photo Info: [view]
Photo Version: Original Version
Date Submitted: 2012-11-25 11:35
Viewed: 4889
Favorites: 1 [view]
Points: 56
[Note Guidelines] Photographer's Note
Pic taken in the sea and not in acquarium.

Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Veneroida
Family: Tridacnidae
Genus: Tridacna
Species: T. maxima

The maxima clam (Tridacna maxima), also known as the small giant clam, is a species of bivalve found throughout the Indo-Pacific. They are much sought after in the aquarium trade, as their often striking coloration mimics that of the true giant clam, however the maximas maintain a manageable size, with the shells of large specimen typically not exceeding 20 centimetres (7.9 in) in length.
The small giant clam is less than a third of the size of the true giant clam (Tridacna gigas). As an adult, it has a large shell that adheres to a rock by its byssus, a tuft of long, tough filaments that protrude from a hole next to the hinge of the shell. When open, the bright blue, green or brown mantle is exposed and obscures the edges of the shell which have prominent distinctive furrows. The small giant clam is a bivalve mollusc, referring to the two valves on the mantle. These siphon water through the body in order to extract oxygen from the water using the gills and to feed on algae.The attractive colours of the small giant clam are the result of pigment cells, which have a crystalline structure inside. These are thought to protect the clam from the effects of intense sunlight, or bundle light to enhance photosynthesis, the energy-producing process carried out by the tiny algae living within.
The small giant clam has the widest range of all giant clam species. It is found in the oceans surrounding east Africa, India, China, Australia, Southeast Asia and the islands of the Pacific.
Found living on the surface of reefs or sand, or partly embedded in coral,the small giant clam occupies well-lit areas, due to its symbiotic relationship with photosynthetic algae, which require sunlight for energy production.
A sessile mollusc, the small giant clam attaches itself to rocks or dead coral and siphons water through its body, filtering it for phytoplankton, as well as extracting oxygen with its gills. However, it does not need to filter-feed as much as other clams since it obtains most of the nutrients it requires from tiny photosynthetic algae known as zooxanthellae.
Beginning life as a tiny fertilised egg, the small giant clam hatches within 12 hours, becoming a free-swimming larva. This larva then develops into another, more developed, larva which is capable of filter-feeding. At the third larval stage, a foot develops, allowing the larva to alternately swim and rest on the substrate. After eight to ten days, the larva metamorphoses into a juvenile clam, at which point it can acquire zooxanthellae and function symbiotically.The juvenile matures into a male clam after two or three years, becoming a hermaphrodite when larger (at around 15 centimetres in length). Reproduction is stimulated by the lunar cycle, the time of day, and the presence of other eggs and sperm in the water. Hermaphroditic clams release their sperm first followed by the eggs later, thereby avoiding self-fertilisation.


Nonostante il nome,la Tridacna maxima non è la specie più grande di Tridacna, raggiungendo dimensioni non superiori ai 40 cm. Le Tridacne ospitano all’interno dei loro tessuti le alghe simbionte zooxantelle che costituiscono per questi bivalvi la fonte principale di cibo. Le zooxantelle conferiscono al mantello una intensa colorazione variabile dal blu al bruno-verde.
Sulla superficie delle valve ci sono escrescenze (squame) che sporgono quasi ad angolo retto rispetto alla valva.
Si nutre sfruttando i prodotti delle alghe zooxanthellae che vivono all’interno dei suoi tessuti.
La riproduzione è di tipo sessuale tramite la produzione di larve planctoniche.

vanni2009, maaciejka, cobra112, CeltickRanger, rousettus, aruntp, buscape, anel, pierrefonds, Miss_Piggy, lovenature, Nasarg, jusninasirun has marked this note useful
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ThreadThread Starter Messages Updated
To Silvio2006: ........lousat 1 11-29 14:19
To cobra112: ......lousat 1 11-25 14:02
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Critiques [Translate]

Ciao Luciano, cavolo che bellezza !!!!!! Fantastica !!!!!! non ho parole, alla faccia delle farfalle.
E ti credo che poi finisci sulla copertina di NOX .
Grande Luciano
Ciao e buona settimana

  • Great 
  • PeterZ Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 5137 W: 166 N: 13121] (49139)
  • [2012-11-25 12:37]

Hello Luciano,
Incredible colours has this clam. It looks like the underwater world is more than fascinating. Exceptional photo in great sharpness, details and beautiful contrasts.

Hi Luciano,
what a nice photo of this interesting animal. Amazing colours. Perfect sharpness and details. Great composition.
Have a nice week,

  • Great 
  • siggi Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 3097 W: 109 N: 12399] (52850)
  • [2012-11-25 13:40]

Hello Luciano.
Beautiful bird and beautiful photo with excellent composition, wonderful colours and very good sharpness.Regards Siggi

E' talmente bella che quasi quasi mi dimnetico che il neroazzurro mi sta indigesto.... ah ah!! Bah! stasera festeggiamo contro il bianconero ma non son mica tanto convinto.


Salut Luciano

Excellente photo de cette créature de mer,
avec ces jolies couleurs et une belle lumière
venant dans l'image, excellent détails, TFS


ciao Luciano
what a beautiful molluscan species in blue coloration. You greatly captured it with superb colors, very nice POV/DOF and focus. Composition also very nice. Grazie amigo. Ciao.

  • Great 
  • aruntp Gold Star Critiquer/Gold Note Writer [C: 590 W: 1 N: 357] (5379)
  • [2012-11-25 21:32]

very beautiful creature.. i have previously seen some videos on this creature. interesting light and angle. good work.

Hello Luciano,
I see your doing underwater photos now and I see your doing it with the same quality.;-) Fine picture of this blue lips that looks tempting like red ones, but even more dangerous or toxic.:-)
Great shot
Best wishes,

Hello Luciano
An amazing subject and a fantastic photo.
Perfect light and detail, nice point of view and composition.
Wonderful to see this species
regards yiannis

Hello Luciano

The electric blue of this giant clam is nothing like I have seen before even on the most beautiful birds or insects and to get this good a focus, exposure and clarity underwater is incredible, especially given the bending of light in water. Simply fascinating your pictures from Egypt.


  • Great 
  • iti Gold Star Critiquer/Gold Note Writer [C: 577 W: 0 N: 650] (7939)
  • [2012-11-26 7:28]

Hi Luciano,
Excellent colours with excellent details.
Very good work.
Is see that you be in Egypt didn't lie only at the beach.
Regards Jiri.

hello Luciano
great sharpness and good details
the colours are beautiful
hreat shot
thanks greeting lou

Amazing subject and amazing photo Luciano! Excellent composition and impressive sharpness! The colours are fantastic!

Hello Luciano,
You seem to be very mush at home under water. What a beautiful and, for me, unusual image. I must congratulate you that it was taken in the ocean and not in an aquarium. We have too many of the "canned" images here as in "Go to a game park, shoot an animal and dolly it up with Photoshop". But nothing artificial here and a very informative note. Thank you and best wishes.

  • Great 
  • anel Gold Star Critiquer/Gold Note Writer [C: 3053 W: 3 N: 8715] (40574)
  • [2012-11-27 5:12]

Bonjour Luciano,
Que ces créatures sous-marines sont belles! Et ta photo est splendide aussi. Bravo encore une fois..
Belle dédicace à Silvio.

  • Great 
  • MMM Gold Star Critiquer/Gold Note Writer [C: 1114 W: 0 N: 2546] (11425)
  • [2012-11-27 6:35]

Hello Luciano
This image is amasing ,the colours are stunning beautiful composition and sharp image .Details and light are amasing
TFS Michel ciao

devo dire che i colori sono fantastici come anche il soggetto, complimenti Luciano per la foto !

ciao, tino

  • Great 
  • tuslaw Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2754 W: 282 N: 4931] (19883)
  • [2012-11-27 20:42]

Hello Luciano,
A stunning shot indeed, gorgeous colors and superb detail. Hard to believe you took this in the ocean and not an aquarium. Awesome underwater image!!

Ciao Luciano, mi devo prendere un periodo di riposo, che questa l'avevo vista ed ero convinto di averla commentata, fortuna Roberto che mi avvisa, che l'arterosclerosi ha iniziato a far guasti alla grande dalle mie parti, favolosa Neroazzurra, ovviamente fantastici i colori, impressionante la trasparenza dell'acqua, magnifici dettagli, straiordinaria creatura, sembra quasi venire da un altro pianeta, bravissimo, un grazie grande come una casa per la splendida dedica, ciao Silvio

Bonjour Luciano,

Cette photo sous l'eau est impressionnante. La prise de vue permet de voir les détailsa et les couleurs del a Tridacna maxima dans son environnement. La bonne luminosité fait ressortir les couleurs. Bonne journée.


  • Great 
  • girni Silver Note Writer [C: 7 W: 0 N: 13] (193)
  • [2012-12-11 2:06]

quelle beauté en mer rouge et quelle netteté !
il y a 20 ans j'ai eu le plaisir d'y voir des merveilles et heureusement il y a encore des sites non endommagés par l'homme

That is really spectacular! Love the clarity on this one. :)

Hallo Luciano
An absolutely beautiful display of colour and glamour. The contrast between the different tones of blue and black just so lovely and the light in the image brings out the bright colours to the best. Thanks for sharing this fascinating macro and bravo for excellent camerawork. Best regards.

hello Luciano,
simply a superb picture with all great quality.
best wishes,

Hello Luciano
Wow, this is a fantastic capture of a sea clam. I never realized how colourful they can be. The colours of the clam are just stunning. Thanks for sharing this sea beauty today. Great notes too.

Happy New Year!

Hi Mr. Luciono,

This is an amazing shot! the colors and the details are fantastic. A perfect underwater photo of the specie. Thank you for sharing this beautiful photo!



Hello Luciano.
Fantastic marine creature with colors out of this world. Excellent glow and details are vivid in the frame. A magical experience and thanks for sharing.
Kind regards,

Ciao Luciano,
Bella composizione è nittidezza,i colori sono fantastici.

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