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Cassis cornuta

Cassis cornuta
Photo Information
Copyright: Mehmet Atatur (matatur) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1054 W: 245 N: 1626] (5312)
Genre: Animals
Medium: Color
Date Taken: 2008
Categories: Molluscs
Camera: Kodak DX4530
Details: Tripod: Yes
Photo Version: Original Version
Theme(s): A study in Conchology (seashells) 1 [view contributor(s)]
Date Submitted: 2009-01-01 13:33
Viewed: 6690
Points: 74
[Note Guidelines] Photographer's Note
I was out of reach of internet the last week, I'm afraid I've missed a lot of your wonderful nature captures in the meantime, hope to catch up with them soon...
I had posted a heavily processed version of this same shell a week ago as a New Year card, but also unfortunately violated the TN terms, so it was removed from the TN pages by the moderator. Today, I'm uploading the same shell in its natural form, this is a Horned Helmet shell, a Cassis cornuta of Cassidae family, usually seen in the Indo-Pacific region, frequenting the shallow to deeper sandy bottoms and predating on various echinoderms. As is evident from this apertural aspect, the spire of the shell is very low with a pointed apex, which is a little weathered on this shell of quite a young individual. The major part of the shell is formed by a large body whorl which exhibits three very low spiral ridges, and between them the shell is heavily pitted. The sutures between the whorls are most pronounced between the last and penultimate whorl, the angular shoulders of the last whorl display a number of protruding knobs or blunt spines, the "horns" of the shell. Here, the posterior end of an earlier lip has formed a strong varice (with three brownish blotches) just outside of the flared inner lip of the widespread aperture. Towards the columella the same lip has formed several strong plaits and the thickened, widened outer lip sports several strong teeth on the inner side. In the shells of more mature specimens the strongly flared lip structure form an enormous "shield" which is effectively used in breaking open urchin tests. The short siphonal canal partly seen at lower right corner is twisted and turned upwards dorsally. An impressive looking shell, the larger ones a favourite collectors item, they are sometimes also used for household decoration.
This close up was taken under a slightly unilateral (from the left) natural daylight with open-shade conditions, over a dark BG.
I hope the quite young Year 2009 will be a Happy and Productive one for all of the TN members!

boreocypriensis, rousettus, rcrick, eqshannon, ramthakur, jaycee, uleko, iris, Miss_Piggy, haraprasan, Alex99, Argus, izler, eng55, nglen, banaei_nikon, elif, Dis. Ac., maurydv, gracious, jusninasirun, siggi has marked this note useful
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ThreadThread Starter Messages Updated
To Miss_Piggy: on Cassis...matatur 1 01-02 23:47
To Argus: on Cassis...matatur 1 01-02 13:07
To iris: on Cassis..matatur 1 01-02 04:11
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Critiques [Translate]

hocam, öncelikle yeni yılınızı en içten dileklerle kutluyor; 2009'un sağlıklı, mutlu ve güzel günlerle geçmesini diliyorum.
bu güzel çekiminiz için ayrıca kutlarım. kendisi de çok güzel olan bu kavkının detayları son derece güzel görünüyor. her zamanki gibi koyu fon pek güzel olmuş. notları görünce hakkında daha fazla bilgimiz olacak. elinize sağlık; şimdilik hoşçakalın.

Hi Atatür Hoca, another beautiful macro capture of a wonderful seashell with excellent details and sharpness.
i wish you and your family a very healthy and happy New Year!


  • Great 
  • batu Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1079 W: 293 N: 4497] (16383)
  • [2009-01-01 13:51]

Merhaba Mehmet,
you start the new year with an excellent and typical 'matatur' presentation. Great depth of field and colours!
I wish you all the best for 2009. I also would like to thank you for your numerous kind comments of my 2008 pictures.

  • Great 
  • efsus Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 415 W: 11 N: 843] (3947)
  • [2009-01-01 14:02]

Merhaba Mehmet Hocam,
Yeni yıla yine çok özel bir kare ile giriş yapmışsınız. Tüm detaylar sizin diğer özgün çalışmalarınızın tadında. Yeni yılda sağlık, huzur ve esenlikler diliyorum.


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  • lousat Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 6595 W: 89 N: 15659] (65489)
  • [2009-01-01 15:14]

Hi Mehmet,i'm happy to see your work in the new year too,i thought you was gone..ehhehe..but now i know that you had only internet problems..ehehe...my best compliments for this shell,i saw a lot like that in Madives Islands...perfect pic as your style,have a great 2009,Luciano

nice portrait, have a nice weekend, tFS Ori

Hello Mehmet,

I've come to expect these wonderful images you produce with exceptional detail and colour, and you never disappoint, this is beautiful.

Excellent detail and colour, happy New Year 2009

Cheers Rick :)

I am so happy you are back as one of the main teachers of us all Mehmet! As always I appreciate your great skills and long knowledge of such things...I am but a dope of water in an ocean of photos when it comes to such creatures shells which you post...and may you have a good year my friend...I personally wish you comfort and health!

Happy New Year to you too, Mehmet!
This new shell is quite intersting in its shape. You have positioned it well to show its features described in your note extremely clearly. The image is very well captured and the colours have come out beautifully.
Thanks and best regards.

  • Great 
  • jaycee Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 2454 W: 10 N: 8044] (25460)
  • [2009-01-01 21:30]

Hi Mehmet,

I'm glad to see you are back for the new year and continuing to post your wonderful shells. A lovely shot of this Horned Helmet with nice colors and wonderful details. Just marvelous against the black background. I wish you and your family a Healthy and Happy New Year.


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  • uleko Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 3396 W: 172 N: 3310] (10940)
  • [2009-01-01 22:32]

Hello Mehmet,
An excellent sharp view of the Horned Helmet Shell showing details and colours very clearly.
TFS and all the best wishes for 2009! Ulla

Mehmet Bey günaydın,tabii ki yine nefis bir çekim,-20 dereceleri hissederken,denizin sıcaklığını anımsatan bir kare,ellerinize sağlık,mutlu yıllar :)

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  • iris Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 479 W: 60 N: 970] (3088)
  • [2009-01-02 0:52]
  • [+]

Dear Mehmet
Another of your fine underwater specimens to start the New Year.Good idea to post this one as the first one was wiped out.
The details on the shell are rich and in good view but i do think the focus was lost out a bit and image got a tad soft compared to your otherwise usual outstandingly sharp images.
The dark BG you chose has helped excellently to highlight the colours and contrasts on the shell itself making the composition more interesting.
Thank you for your wonderful contributions in genre of marinelife and we hope to see more of your unique and priceless captures in 2009.Peace and Health to you and family

Merhaba Mehmet hocam,
sizin de yeni yılınızı kutlarım..
Yine nefis bir örnek sunmuşsunuz bizlere..
emeğinize sağlık...

Hallo Mehmet
The shells in your collection are splendidly shaped and so big in size. The most of them look solid and firm and not fragile like the ones I have seen in real life. The dotted markings on this peach coloured beauty are very eye-catching and striking. The brown spots look like they have been engraved or burned into the shell. The outer lining of the shell looks like that of an ear, and in this case it must be that of a giant as this is rather huge. A lovely presentation and as always very educational. Thanks for all your valuable contributions from your side to the site.
Best regards.

Hi Mehmet,
Wishing you and your family a Happy New year. A nice capture of this beautiful Helmet shell. Superb sharp details and a lovely composition with nice BG. Thanks a lot for sharing.

great close-up , beautiful colours and sharp,
Happy New Year!

  • Great 
  • Alex99 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 4072 W: 133 N: 7096] (23735)
  • [2009-01-02 7:43]

Hi Mehmet.
Happy New Year, dear friend. I wish you to continue your unique collection of amazing shell pictures. I have seen enough number of shells however, your collection impresses the imagination. Especially I like their colouration and skill of reproduction of their beauty. My compliments and TFS.

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  • Argus Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 5038 W: 260 N: 15594] (50626)
  • [2009-01-02 8:04]
  • [+]

Merhaba Mehmet,
I wish you a happy and healthy 2009!
You start the year with a fine portrait of a species of Helmet shell that strikes a chord of familiarity. When we were snorkelling in the Caribean by Tobago I saw a similar species, quite large, easily 20cm long and probably the same genus as this Cassis.
This beautifully portrayed showing the salient features with fine sharpness and lighting.
Thanks for sharing this beauty as well as your customary informative note,

  • Great 
  • izler Gold Star Critiquer [C: 1387 W: 3 N: 9] (44)
  • [2009-01-02 8:41]

merhaba değerli hocam
ben de mutlu ve sağlıklı bir yıl dilerim size
güzel bir objeyle nefis bir yakın çekim çalışması daha sunmuşsunuz
renkleri, fonu ve netliği harika olmuş
ellerinize sağlık

  • Great 
  • eng55 Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 1256 W: 42 N: 1976] (5892)
  • [2009-01-02 11:06]

Merhaba Mehmet Bey,
Yeni Yılınızı ben de kutluyor,size ve ailenize sağlık,mutluluk ve başarı dolu bir yıl diliyorum.Orjinalini elimize aldığımızda göremeyeceğimiz bütün detaylar fotografınızda belirgin.Pozlama,ışık,kadraj ve koyu fon her zamanki gibi mükemmel.
Selamlar,ellerinize sağlık!

  • Great 
  • cako Gold Star Critiquer/Gold Note Writer [C: 485 W: 0 N: 772] (3395)
  • [2009-01-02 11:36]

Mehmet hocam yeni yılınızı kutlar bu güzellikleri bizlerle paylaştığınız için bir kez daha teşşekkür ederim selamlarımla cahit.

Merhaba Mehmet, your are the King of shell in TN:)
Wonderful hornet helmet with great colors, superb details and splendid sharpness,
I like a lot

  • Great 
  • nglen Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 2883 W: 30 N: 9683] (36145)
  • [2009-01-02 12:00]

Hi Mehmet. Once again a fine close up of this beautiful shell , which you take in your own type of way. With fine detail and colours. /lighting . against the black BG. well done TFS.

PS i must admit i was not to keen on the last one.

Hi Mehmet
well captured and the colours have come out beautifully.
Thanks and best regards.


Merhaba Mehmet!
First of all - all the best in new year!!! :) I wish you only happy moments and great time in 2009! :)

The picture is as always 1st class. Very sharp, with good contrast and light :) I like also a note - informative and educative :)

Warm greetings from cold, winter Lodz!

  • Great 
  • fiyo Gold Star Critiquer/Gold Note Writer [C: 1053 W: 5 N: 3475] (15161)
  • [2009-01-03 7:31]

Merhaba Mehmet bey,
güzide arşivinizin nefis bir parçasını daha
bizlerle paylaştığınız için teşekkürler, elinize sağlık.
Yeni yılınızın mutlu ve sağlıklı olması dileklerimle, selamlar..

  • Great 
  • elif Gold Star Critiquer/Gold Note Writer [C: 164 W: 0 N: 101] (466)
  • [2009-01-03 13:39]

Sayon Hocam,Açıkcası sizin gibi ustaların fotoğraflarına nasıl yorum yazacağımı bilmiyorum. Tek kelimeyle harika bir kare... Elinize sağlık..
En içten ileklerimle yeni yılınızı kutlarım.
iyi akşamlar

I hope you plan on putting together a book of these wonderful shells someday.
Your technical skill is amazing, but the best part is seeing the intricacies and differences in these creations of nature.

Hi Mehmet,

another great presentation of an shell, this time the Horned Helmet shell with great deatails andnice black BG.
Beautiful colours, another great picture.
I learn so much about shells.


Merhaba Mehmet,
anzi tutto ricambio il tuo Augurio di un Felice e Proficuo 2009; bellissima immagine catturata come sempre con grande maestria per far apprezzare questa bellissima conchiglia dagli eccellenti dettagli e dai bellissimi colori.

  • Great 
  • joey Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1739 W: 224 N: 6872] (24909)
  • [2009-01-04 14:23]

A stunning shell!
The colours on it are amazing.
Great clarity.
Superb composition.
Well exposed.

Excellent work!


Merhaba Dr.Mehmet,
Thank you once again for this natural looking shell in good closeness!
very nice pattern of it with it's nice colour and details
well done
greeting from NZ

Hi Mehmet,

Another fine collection in your gallery. Beautiful details and well silenced negative background. Have a wonderful year ahead and best regards. Jusni

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  • siggi Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 3097 W: 109 N: 12399] (52850)
  • [2009-01-08 12:36]

Hello Mehmet,
excellent photo, i like everything here, colour, geometry, composition, close up, texture, simply everything!, well done
Best regards Siggi

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  • PaulH Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 1137 W: 26 N: 3879] (13882)
  • [2009-01-09 10:41]

Hi Mehmet,
another fascinating shot from you. Excellent detail and as always your wonderful trademark presentation, very well done my friend.

Hello Mehmet.

Excellent macro, nice composition and colors.

Jose Luis.

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