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Japanese Sea Nettles


Japanese Sea Nettles
: James Parker (Jamesp) Gold Star Critiquer/Gold Note Writer [C: 1369 W: 9 N: 6334] (18906)
: Animals
:
: 2008-06-02
: Cnidarians
: Canon EOS 1Ds MkII, Canon 24-70 mm f 2,8 L-USM
Exposure: f/3.5, 1/60
More Photo Info: [view]
:
: Where they Usually Are Not, Blue Things II, TN Favourites [view contributor(s)]
: 2008-07-11 6:53
: 9570
: 1 [view]
: 58
[Note Guidelines]
I took these Jellyfish in the Vancouver Aquarium on my recent trip to Canada. I really like the jellyfish displays, they are so beautiful.

The stinging sea nettle (Chrysaora quinquecirrha) is a species of jellyfish occurring particularly in Atlantic estuaries - though this is a Japanese species. It is a bell-shaped invertebrate, usually semi-transparent and with small, white dots and reddish-brown stripes; Sea nettles without stripes have a bell that appears white or opaque. The nettle's sting is rated from "moderate" to "severe" and can be pernicious to smaller prey; it is not, however, potent enough to cause human death, except by allergic reaction. While the sting is not particularly harmful, it can cause moderate discomfort to any individual stung. The sting can be effectively neutralized by misting vinegar over the affected area. This keeps unfired nematocysts from firing and adding to the discomfort.

Stinging sea nettles are carnivorous. They generally feed on zooplankton, ctenophores, other jellies, and sometimes crustaceans. Nettles immobilize and obtain their prey using their stinging tentacles. After that, the prey is transported to the gastrovascular cavity where it is subsequently digested.

Nettles also eat young minnows, bay anchovy eggs, worms, and mosquito larvae.

Each nettle tentacle is coated with thousands of microscopic nematocysts; in turn, every individual nematocyst has a "trigger" (cnidocil) paired with a capsule containing a coiled stinging filament. Upon contact, the cnidocil will immediately initiate a process which ejects the venom-coated filament from its capsule and into the target. This will inject toxins capable of killing smaller prey or stunning perceived predators. On humans, this will most likely cause a nonlethal, but nevertheless painful rash typically persisting for about 20 minutes. Some earlier cases of nettle stings from the Philippines reportedly had more severe effects: one account describes a sting causing vascular insufficiency, and another mononeuritis.

Rather than toxic substances, some nematocysts contain adhesion used to entangle or anchor its target.


The sea nettle is radially symmetrical, marine, and carnivorous. Its mouth is located at the center of one end of the body, which opens to a gastrovascular cavity that is used for digestion. It has tentacles that surround the mouth to capture food. Nettles have no excretory or respiratory organs. Each sea nettle is free-swimming and can reproduce both sexually and asexually.

uleko, writerscrawlz, mayuresh, jaycee, nglen, Gert-Paassen, aes_thor, boreocypriensis, eqshannon, albert, NinaM, CeltickRanger, tuslaw, Royaldevon, cataclysta, pekkavalo1, Argus, GLEM has marked this note useful
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Critique [ ] 
Thread Starter
To jaycee: Dead easyJamesp 4 07-11 14:07

Critiques [Translate]

  • Great 
  • GaryT Gold Star Critiquer [C: 102 W: 7 N: 236] (160)
  • [2008-07-11 7:29]

Amazing photograph. I presume it was shot through glass. Great composition, great lighting. Gary

  • Great 
  • uleko Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 3423 W: 173 N: 3309] (10940)
  • [2008-07-11 8:04]

Hello James,
I agree with you, I think Jellyfish are so beautiful and fascinating. This is a very fine capture showing these Stinging Sea Nettles against the blue background. Excellent sharpness and lovely colours.
Many thanks, Ulla

The colors are so brilliant that they seem to be alive! This photo is awesome in that the jellyfish are so sharp that I can see the tiny details of the tentacles.

I love seeing them, and two years ago I got to see my first jellyfish in the ocean - and it was a stunning display (though they urged everybody to stay away from the end of the pier because the bay was filled with them).

The vivid colors grabbed my attention and I had to see the full display. Your notes are outstanding - thanks for posting this - and by the way, the composition is stunning.

Hello James,
Amazing and wonderful shot,superb lighting and focusing,lovely colours,
very well done,
tfs

Bonjour,
J'aime bien ces couleurs vives !
Bonne journe.
clnaef

Hi James,

Your talents never cease to amaze me. If this shot was taken at an aquarium it must have been through glass but it's so perfect no one would know. Jellyfish are just fascinating and so is this picture. Wonderful colors against that royal blue water. Superb details and great notes.

Jane

Wow, what rich colors, James. It is a beautiful photo and so sharp. Got to love that lens....

TFS
Evelynn : )

  • Great 
  • nglen Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 2883 W: 30 N: 9683] (36145)
  • [2008-07-11 9:39]

Hi James. Very good detail aand colours in this display by the Nettles which you have captured from behind the glass so well. I like the light colour of the blue going down to a darker one.and good use of the light. well done TFS. interesting notes too.
Nick..
Have a nice weekend

Hello James,

what a beautiful Jellyfish.
Very good pov and sharpness.

Gert

Hi James,

looks fantastic, great colours and contrast, perfect details. Not common to see something like this on TN. Thanks a lot for sharing

cheers
Adrian

Hi James, my dear friend,

What an amazing coloured capture of these bioluminative jellyfishes. Perfectly focxused and composed... Great capture!
TFS. Have a nice weekend!
Cheers,

Bayram

Hi James, very impressive picture, really excellent control over the light to get this through glass... lovely image......regards h

Wow!
Bob Shannon

  • Great 
  • arfer Gold Star Critiquer [C: 2731 W: 0 N: 0] (0)
  • [2008-07-11 21:52]

Hello James

They are funky.
Wonderful colour contrast and saturation.
very well composed in the frame.
Excellent sharpness and clarity.
An artistic shot.
TFS

Rob

I've never been to the aquarium. If this is what is there I should.
What a gorgeous capture. For behind glass it is very clear.

  • Great 
  • PeterZ Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 5097 W: 166 N: 13041] (48616)
  • [2008-07-12 4:02]

Hello James,
Very beautiful photo. Amazing clear colours with the light in the upper and the dark in the lower parts.
The sharpness and details are excellent. Very good composition.
Regards,
Peter

Hello James
Stunning colours and great compo
Well done
Have a nice W-E
Albert

  • Great 
  • joey Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1739 W: 224 N: 6872] (24909)
  • [2008-07-12 13:07]

Hi James,
what a stunning image!
The lighting is perfect!
Amazing colours.
Very fine detail and exceptional clarity seeing this was shot through glass (I guess!).

Very well done!

Joe

  • Great 
  • NinaM Gold Star Critiquer [C: 773 W: 3 N: 1157] (4077)
  • [2008-07-12 14:52]

They sure are magnificent creatures and this picture shows them in all their grace and beauty. The light is superb and the colours are stunning. I am fascinated at the clarity of the light and water, congratulations, James, it is a superb shot.

Francine

hello James

beautiful image framed vertically, i love the veru beautiful luminosity
and colours of the image, and the blue effect from hard blue to soft blue,

TFS

Asbed

  • Great 
  • tuslaw Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2725 W: 280 N: 4903] (19826)
  • [2008-07-13 4:12]

Incredible photo James,
Extremely sharp and very rich colours. I see you didn't use a flash but still manage to capture a gorgeous well illuminated image.
Well Done!!! Very informative notes!
Ron

  • Great 
  • EOSF1 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1393 W: 119 N: 5267] (23955)
  • [2008-07-13 6:12]

Hello James, wow what a great image of those Sea Nettles, the sharpness, the color contrasts and the composition are very good! Thanks!

Mario

Hello James,

I'm glad you captured them in an aquarium and not in the sea. The last time we went to Malta, there was a jellyfish epidemic and lookouts were posted on some beaches like they do for sharks!

I have to agree with you that they are colourful and you have captured that aspect very well. The details have come out really well despite being photographed through glass.

Kind regards,
Bev :-)

  • Great 
  • hester Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 1515 W: 18 N: 3165] (11638)
  • [2008-07-13 10:23]

Hi James

These are real beautys, glorious colours and wonderfully sharp and cler for an aquarium shot

TFS

Karan

Hi James
Beautiful composition, great color and inteesting light. Another beautiful shot in you collection
TFS
Best wishes
Krzysztof

Hi James,
Couldn't imagine that Jellyfish would be so beautiful. Great composition and lighting, amazing colours.
TFS
Pekka

  • Great 
  • Argus Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 5077 W: 260 N: 15590] (50614)
  • [2008-07-14 9:44]

Hello James,
I suppose that if one is not a diver with underwater equipment, aquarium shots must be the only alternative.
Given that, this is an excellent capture of Japenese Sea Nettles with superb lighting and sharpness.
TFS this beauty,
Ivan

  • Great 
  • reina Gold Star Critiquer/Gold Note Writer [C: 257 W: 1 N: 330] (2032)
  • [2008-07-15 5:08]

Wonderful colours, well done with the light and the glass, thanks for sharing. Regards reina

  • Great 
  • GLEM Gold Star Critiquer/Gold Star Workshop Editor [C: 540 W: 87 N: 750] (10)
  • [2008-07-15 9:39]

hi James,
superbe image de ces mduses, je prfre cependant les voir en bassins qu'au bord de la plage. Magifiques couleurs et lgante prsentation de leur grand filament.

gl

Hi James

A colourful presentation of these Sea Nettles. Usually just see waves created by other divers ''running away''

TFS. Sorry, no points, used up today's allotted points.

Verite

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