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Sleeping sharks


Sleeping sharks
Photo Information
Copyright: Peter Bergquist (Pedda) Silver Star Critiquer/Gold Note Writer [C: 41 W: 1 N: 247] (1287)
Genre: Animals
Medium: Color
Date Taken: 2005-02-09
Categories: Ocean
Camera: Nikon D70, Nikkor 18-70mm
Exposure: f/10.0, 1/60 seconds
Details: (Fill) Flash: Yes
More Photo Info: [view]
Photo Version: Original Version
Theme(s): Underwater World [view contributor(s)]
Date Submitted: 2005-02-15 10:09
Viewed: 8263
Favorites: 1 [view]
Points: 28
[Note Guidelines] Photographer's Note
Triaenodon obesus or as we usually call it, Whitetip reef shark. Its one of the sharks the divers first encounter during dives since itís widespread and common. Usually swims up from its resting position on the ground when approached during the day, only to return to nearly the same position after circling out of sight for a few minutes. It might get aggressive if molested but itís considered to be a peaceful shark.

When born itís around 45-56 cm long and as most it gets 210 cm long and youíll find them between the surface and down to 40 meters depth. It has a slender body with a broad snout and the pectoral and dorsal fins has pointed tips. First dorsal and upper lobe of caudal fins has the white tips that have given the shark its name. The coloration is grey to brown above and lighter below.

Itís a nocturnal shark and during the day youíll often find the in groups resting in caves. Resting caves are known to be frequented by the same individuals regularly every day, sometimes for years. Activity is highest during the night, when the sharks frantically hunt singly or in small groups in the reef where they prey on bony fishes, crabs, lobsters and octopuses.

Copulation has been observed in the wild: The male grasps one pectoral fin on the female with his mouth and insert a single clasper. The male also bites and holds the femaleís gill region during the courtship that lasts between 1.5-3 minutes. After 13 months baby sharks are born. Maturity is reached after 5 years and maximum age is estimated to be at least 25 years.

Iíve done three dives on the same dive site and every time it has been sharks in the same caves. Some friends of mine have kept this place secret since they donít want to have too many divers there that might scare the sharks of, but after a lot of begging and a captain with good memory I finally got to dive there. There are three caves that are frequented by the sharks. One on 28 meters depth. The two others are in a reef pinnacle that sticks up from the bottom at 20 meters depth. Youíll only find the shark there during the winter time and we think that the reason for that is hot water. When you get close to the pinnacle you can both see and feel that the water is warmer than the rest of the sea. And if you put your hand in the cave itís a lot warmer than on the outside. So we think that itís a warm water spring or something like that under the pinnacle. Two of the sharks in the cave have a Striped Remora attached to them.

For once I actually regret that I bought a big and bulky DSLR camera because the holes into the caves are so small that I cannot get my camera in to it. This gives me limited options and some problem where to position the camera and the flash to get great photos.

dew77, mogens-j, sergegagne, PDP, marhowie, sandpiper2, trinko has marked this note useful
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To mogens-j: Close...Pedda 1 02-15 11:46
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Critiques [Translate]

  • Great 
  • dew77 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 4432 W: 248 N: 4028] (13270)
  • [2005-02-15 10:38]

Great shot! Sharpness,details and colors are very good
TFS

Thats a Killer picture.
I Love pictures from sea.
Nature is so perfect.
all this colours, so alive, congrats.

Great capture Peter very clear and with great colours. The dof/sharpness is spot on as well as the colours showing a lot of details. The small fishes add a great perspective to the image.

I wonder if they are not desturbed by you swimming around and shooting the flash - and how close were you.

Simply beautiful, Peter! Superb colors, and I like the contrast of the small fish with the darker tones. Very interesting note too. Great job. Hope to see more of your images soon. Thanks for sharing.

  • Great 
  • Kris Gold Star Critiquer/Gold Note Writer [C: 174 W: 0 N: 129] (1818)
  • [2005-02-15 16:45]

A very beautiful place and a perfect
colours, details and scenery!
I like it very much.
Good work, congratulation.

Nice picture and a fascinating note to got with it.

  • Great 
  • PDP Gold Star Critiquer/Gold Star Workshop Editor [C: 2821 W: 344 N: 3779] (11769)
  • [2005-02-15 18:07]

Excellent shot Peter, the compositon is great and I love the flecks of colour from the fish. Lovely shot.

Peter, This is superb! Really top-notch underwater shot. You get an A+ for composition, color, sharpness, use of light, DOF & just all around greatness!! thanx for sharing this gem!!

  • Great 
  • jossim Gold Star Critiquer/Gold Note Writer [C: 1538 W: 5 N: 2240] (12636)
  • [2005-02-15 22:55]

Superbe un festival de couleurs ctte photo. Fťlicitations et merci pour l'envoi.

very nice shot, good sharpness and colours.
Well done.
TFS.

Excellent composition. Love the orange and blue fish and the sucker fish on the shark. A unique moment you've captured with great exposure for an undeerwater shot. Really good.

Super shot, this is just fantastic, love it, now I really have to get back to the red sea. What a capture, sharp, good colour considering its almost under coral. Well done.

  • Great 
  • tias (0)
  • [2005-09-16 8:27]

mooie foto zeg!
helemaal daar waar dat blauwe guppie voor de haai zwemt en wordt omgeven door oranje! mooi kleurencontrast!
Mathias

  • Great 
  • trinko Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 587 W: 78 N: 322] (4321)
  • [2006-10-06 21:56]

nice pile of sharks.

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