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Sitting in the morning sun...


Sitting in the morning sun...
Photo Information
Copyright: Gerhard Theron (gerhardt) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1936 W: 244 N: 4106] (11620)
Genre: Animals
Medium: Color
Date Taken: 2005-09-22
Categories: Crustacia
Camera: Canon EOS 20D, Canon EF 100-400mm F/4.5-5.6L IS USM, Digital ISO 200, Hoya UV-Guard (77mm)
Exposure: f/10.0, 1/80 seconds
More Photo Info: [view]
Photo Version: Original Version
Date Submitted: 2005-10-09 3:49
Viewed: 7523
Favorites: 2 [view]
Points: 89
[Note Guidelines] Photographer's Note
Salt water Crab
Unknown species

I am way out of my depth trying to ID this critter. Sorry about that.


The term crab is often applied to several different groups of short (nose to tail) decapods with thick exoskeletons, but only members of the Brachyura are true crabs; other taxa, such as hermit crabs, porcelain crabs, king crabs, and horseshoe crabs are, despite superficial similarities, not crabs at all. Hermit crabs, king crabs and porcelain crabs belong to the Anomala and can be distinguished from true crabs by counting the legs - in Anomala, the last pair of pereiopods (walking legs) is hidden inside the carapace and so only four pairs are visible (counting the claws), whereas uninjured true crabs always have five visible pairs.

True crabs are crustaceans in the suborder Brachyura, in the order Decapoda. They have five pairs of walking legs (the first of which is modified into a pair of claws or chelae) and typically a flattened shell. In all but a few crabs (for example, Raninoida), the abdomen is folded under the cephalothorax. The form of the abdomen usually reveals the sex of the crab - males have a narrow abdomen, while females have a much wider abdomen, under which they carry their eggs. Crabs are a very diverse group, mostly found in salt water, but with some groups living in freshwater or on land. Although famed for their tendency to walk sideways, crabs are in fact able to walk in any direction.

Classification within the crabs is traditionally based on the position of the gonopores: whether they are found on the legs or on the thorax. In the two "primitive" sections (sometimes called collectively the "Podotremata"), the gonopores are found on the legs (as in all other decapods); in the Heterotremata, the male gonopores are on the legs, and the female gonopores are on the sternum; in the Thoracotremata, the gonopores are on the sternum in both males and females.

Most crabs show clear sexual dimorphism and so can be easily sexed. The abdomen, which is held recurved under the thorax, is narrow in males. In females, however, the abdomen is considerably wider, and retains a greater number of pleopods. This relates to the carrying of the fertilised eggs by the female crabs (as seen in all pleocyemates). In those species in which no such dimorphism is found, the position of the gonopores must be used instead. In females, these are on the third pereiopod, or nearby on the sternum in higher crabs; in males, the gonopores are at the base of the fifth pereiopods or, in higher crabs, on the sternum nearby.

Hope you like it.

TAZ, joeydrops, coasties, red45, wallhalla15, jstewart, Mousehill, sAner, momos, Fisher, scottevers7, radz, Runnerduck, dew77, tiobibi, Toni, marhowie, Fernandez, Luc, pompey, PDP, slrnovice2 has marked this note useful
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Discussions
ThreadThread Starter Messages Updated
To metcher: Thank you for the kind words...gerhardt 1 12-07 15:28
To sAner: Ja... ek het...gerhardt 1 10-12 18:01
To momos: Unsure...gerhardt 3 10-12 01:17
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Critiques [Translate]

  • Great 
  • TAZ Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 2241 W: 47 N: 3167] (10926)
  • [2005-10-09 3:58]

Wooow ! What a superb and interesting Crab that you have very well captured ! Composition with low point of view is wonderful ! DOF and colors are excellent. Congratulations Gerhard and thanks for sharing.

Hi Gerhardt,
An excellent capture of this beautiful crab. The POV is excellent with the crab up close and front on. Superb colours and detail. Well done!
Claudia.

Hi Gerhard

Yum yum!! Perfect shot. Thanks.

  • Great 
  • red45 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2636 W: 74 N: 9091] (31094)
  • [2005-10-09 4:20]

Perfectly taken Gerhard. Armour is so detailed, sharp and colorfull. Great BG, pose of this little crab and its proud 'face' ;-) Interesting note also. I saw these animals for first time month ago on my Bulgarian holidays - they're great and funny.

Great shot! f/10 was just enough to get the crab in sharp detail and background nicely blurred. Well done!

King Gerhard is back,
very nice shot gerhard,
great composition, very good pov, good details and a good dof, I like the shot a lot,
gegroet mijn vriend.
gr. Jaap

Wow, that´s Mr. Crabs from spongebob. ;-)
Gerhard, pose is excellent, good work, very good sharpness, details, colours and composition. Thanks for sharing.

Superb shot with crisp focus on the crab and everything else being a gentle blur of coordinated colours. Can't help you with the ID of the crab, however.

  • Great 
  • Lia Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 58 W: 17 N: 135] (952)
  • [2005-10-09 6:56]

What a splendid photograph is this!
say terribly, this find I top work!
nicely of colour and acerbity nou yes actual only praise!
groetjes Lia

Great crisp contrast and sharpness in this one Gerhardt. I like the way the crab fill the entire frame and the great OOF background to make him stand out. Very pleasant!

Hi Gerhard Theron ,
An excellent capture of this beautiful crab With great composition, very good pov, nice details and a perfect dof.Thanks for sharing.

  • Great 
  • sAner Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1455 W: 74 N: 1426] (4750)
  • [2005-10-09 7:19]
  • [+]

Hi Gerhard,

Ha! Jij moet op je buik hebben gelegen om deze foto te maken! :) Excellent POV and superb, razorsharp details. Great colors and well composed. This is a fine shot! Well done & TFS!

Regards,
Pieter

I like this picture very much ! Nice depth of field, and the colours are wonderful. Sharpness is very nice ...

Great picture ! Thank you for sharing

  • Good 
  • momos Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 57 W: 55 N: 171] (705)
  • [2005-10-09 7:32]
  • [+]

Ωραία φωτογραφία αλλά νομίζω πως χρειαζόταν ένα διαφορετικό κάδρο: Η μηχανή λίγο πιο ψηλά για να φύγει το χωρίς εστίαση μπροστινό κομάτι του δαπέδου. (GR)
Christos

  • Great 
  • optic Gold Star Critiquer [C: 322 W: 0 N: 0] (0)
  • [2005-10-09 7:37]

Hi Gerhard,
Very nice shot great depth of field & pov, razorsharp detail and background nicely blurred very well done,

Regards,
Christian

fantastic shot. what a great position you have there not to mention its sharpness and color distribution.

Hi Gerhard,

What a beauty, excellent shot, details, lighting. Well done on the composition. Excellent work.

Mike

Hi Gerhard,
Excellent composition on this crab. Amazingly good color and detail in this shot. Perfect DOF, and the clean OOF backround is perfect for this shot. Great Work, and great notes!
Scott

  • Great 
  • radz Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 598 W: 11 N: 72] (436)
  • [2005-10-09 10:20]

Excellent shot!nice composition&sharp shota!!

This is a fantastic shot! and for the life of me I really couldn't figure out why you got a half point for this one from someone? Paul :)

A great short Gerhard. I love the slate blue of the ground against her orange body with a touch of green above.
Excellent comp and detail. Perfect pov.
Thanks for posting.

  • Great 
  • Janice Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 3277 W: 148 N: 6163] (18832)
  • [2005-10-10 0:15]

Well centred Gerhard! And I mean it too - excellent shot of the crab, and placing it like this is just right. Very sharp details and good colours too. Well done and thank you for sharing.
How big was he? He does look quite a large crab.

  • Great 
  • dew77 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 4432 W: 248 N: 4028] (13270)
  • [2005-10-10 2:31]

Hello Gerhard!
Wonderful capture.DOF,POV,colors,framing,lighting,details,3D effect,BG and composition are excellent.TFS...:-)

  • Great 
  • manyee Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 3089 W: 230 N: 6774] (23770)
  • [2005-10-10 2:36]

Haha... Gert. That is a great and humorous shot.
Beautiful crab, with super sharp details and fantastic POV.
TFS. : )

Hi Gerhard,
DIF is excellent, sharp is great.
I like the colors of this crab
TFS
Nico

Great close up, very good details and impresive pose.
Well done.
TFS.

Brilliant shot, Gerhart
Excellent lighting and colour, great pov, very nice background.
Superb!

  • Great 
  • Toni Gold Star Critiquer/Gold Note Writer [C: 403 W: 2 N: 316] (2034)
  • [2005-10-10 17:32]

Hi Gerhard
Beautiful composition and so well framed. Great angle and amazing contrasts and colours. Really sharp too.
Regards Toni

  • Great 
  • ryyck Silver Star Critiquer/Gold Note Writer [C: 24 W: 0 N: 176] (994)
  • [2005-10-11 15:25]

Muito bem capturada, parabéns!

  • Great 
  • jossim Gold Star Critiquer/Gold Note Writer [C: 1538 W: 5 N: 2240] (12636)
  • [2005-10-11 21:25]

Encore une superbe photo Gernard !

Félicitations tout est parfaits.

  • Great 
  • pat Gold Star Critiquer/Gold Note Writer [C: 87 W: 0 N: 125] (414)
  • [2005-10-12 7:43]

Wow, excellent shot with oustanding POV ! Nice background with beautiful colours, interesting lighting conditions, great sharpness, just perfect! TFS, Patrick

This is very good Gerhard. Your POV here makes the shot. Thank You my friend.

Love the low POV, colours and superb details Gerhard. Shallow DOF is very nice also. I do think the composition is a little though. 7/10 Very nice work.

IMPRESIONANTE :D. Una naravilla, te felicito :D. Un gran trabajo :)

  • Great 
  • Luc Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1835 W: 301 N: 4287] (14767)
  • [2005-10-23 22:48]

Personal assessment of the photo: excellent.
Capacity of evocation in me: good.
Very strong visual impact.
Aptness of the photo for the site: excellent.
Personal assessment of the note: very good, almost complete.
Thank you friend Gerhard.
Have a great week in Sought Africa!

  • Great 
  • pompey Gold Star Critiquer/Gold Note Writer [C: 144 W: 4 N: 746] (2774)
  • [2005-10-25 11:30]

Fantastic capture Gerhard, the short depth of field is excellent, leading to the perfect background. He sure is a beauty and you can see every detail.
Good colours and note too!
TFS.
Michael.

It'a a funny macro! The colours are perfect and the contrast between the land and the animal is very good!
Congratulation Tom

Crab photography is still unknow thing for me.
This is composed very well. I love the low angle here. Good light and details. Sharp.
Beautiful symmetrical image. About your question. ISO 400, F16, 1/200 (max with flash for me). And 500D was missing also from parametres. Actually surprise for me. I expected ISO 200 and F11. Somwhere I had reswitched into noisy ISO. For happiness we have NeatImage.

  • Great 
  • PDP Gold Star Critiquer/Gold Star Workshop Editor [C: 2821 W: 344 N: 3779] (11769)
  • [2006-01-05 17:34]

Hello Gerhard, I can't believe that I missed this one! It's fantastic. Love the POV and the colours and details are superb! DOF is super too.

Great shot.

A fantastic photo with an great perspective. I don't know what else I can add to everyone else's comments, other than I love the graduation of blue/green colors of the b/g against the crab. This is simply superb work, Gerhard.

Hi Gerhard,
Great image. Perfect DOF, exposure and great light.
Paul

Gerhard this is a great shot, so clear, sharp and detailed. The colours really stand out against that diffuse background and your low POV (how did you get that low?) really makes for an intimate shot. Everything works, this should be on a magazine cover :)

Exelent photo.This Crab was ready for the shot. I like the photo,also the balance of the colors is wonderful.

Good job, sharp in the middle!!!! good done!

Great shot! Excellent sharpness and details. Also colours are good.

magnifique

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