Lizard fish, Philippines. Photo by Stephane Rochon.

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Video migliori

Sea snails and electric flame scallop. Part 17 of my documentary, "Mucky Secrets", about the fascinating marine creatures of the Lembeh Strait in Indonesia. Watch the full 90-minute documentary at http://www.youtube.com/watch?v=nJMZ6reOB0E

As we continue to examine molluscs (mollusks, Mollusca)  in this documentary series, we take a quick look at the electric flame scallop (Ctenoides ales), otherwise known as the "disco clam", "fire clam" or "electric clam". The flame scallop is a type of bivalve (Bivalvia). It appears to emit luminescent electrical pulses, but actually it is rolling and unrolling the edges of its mantle, revealing special particles that simply reflect light. The display is thought to attract phytoplankton as food and perhaps frighten off predators like crabs and shrimps.

We then turn our attention to sea snail (gastropods, Gastropoda). The grey bonnet (Phalium glaucum) is a typical sea snail. It has a protective, coiled shell that it can withdraw its entire body into. It glides over the substrate on its large, muscular foot, and at the rear we see the operculum, a hard lid that is used to close the opening of the shell after the snail withdraws into it. Two simple eyes peer out from under the front of the shell, and important sensory feedback also comes from the two tentacles. To one side is the inhalent siphon, a tube that the sea snail uses to draw in water for respiration.

The anatomy of another gastropod, the vomer conch (Euprotomus vomer), is different. Its mouth is much more obvious, at the end of a long protrusion called a proboscis. It is strictly a herbivore, and it uses the proboscis for locating and eating algae growing in the sand. It's eyes are much more prominent too, at the end of long stalks, and jutting out from these stalks are two highly sensitive tentacles. Rather than gliding, it uses its operculum to drag itself along the bottom in a lurching motion.

Conchs are a popular food, and their shells have symbolic and religious significance in some cultures. They have been used for everything from musical instruments, to weapons, to ink holders.

We then encounter a whitespotted hermit crab inhabiting an empty cone shell. The main sensory device of cones like the ivory cone (Conus eburneus) is the siphon itself which contains highly sensitive chemoreceptors. If it detects suitable prey the cone will unleash a harpoon from its proboscis containing a highly venomous neurotoxin, powerful enough to kill humans.

There are English captions showing either the full narration or the common and scientific names of the marine life, along with the dive site names.

The full Mucky Secrets nature documentary features a huge diversity of weird and wonderful marine animals including frogfish, nudibranchs, scorpionfish, crabs, shrimps, moray eels, seahorses, octopus, cuttlefish etc..

Thanks to Kevin MacLeod of http://www.incompetech.com for the music track, "Scheming Weasel (slower version)", which is licensed under a Creative Commons Attribution 3.0 Unported license.

Thanks to the staff and keen-eyed divemasters of Two Fish Divers (http://www.twofishdivers.com), for accommodation, diving services and critter-spotting.

The video was shot by Nick Hope with a Sony HVR-Z1P HDV camera in a Light & Motion Bluefin HD housing with Light & Motion Elite lights and a flat port. A Century +3.5 diopter was used for the most of the macro footage.

I have more scuba diving videos and underwater footage on my website at:
http://www.bubblevision.com

I post updates about my videos here:
http://www.facebook.com/bubblevision
http://google.com/+bubblevision
http://www.twitter.com/nicholashope
http://bubblevision.tumblr.com

Full list of marine life and dive sites featured in this video:

00:00 Flame Scallop, Ctenoides ales, Nudi Retreat
00:29 Grey Bonnet, Phalium glaucum, TK 2
01:23 Vomer Conch, Euprotomus vomer, Jahir
02:28 White-spotted Hermit Crab, Dardanus megistos, Two Fish Divers house reef
02:40 Ivory Cone, Conus eburneus, TK 2
03:03 Nudibranchs, Hypselodoris bullocki & Glossodoris cincta, Aer Perang
03:08 Nudibranch, Doto sp., Nudi Retreat 03:33

Teluk Kembahu 2
Indonesia

The USS Gen. Hoyt S. Vandenberg is on the bottom of the Atlantic Ocean, in about 140 feet of water seven miles off Key West.
Divers have confirmed that it is sitting upright, with the keel in the sand.
The former troop transport ship successfully sunk in about two minutes at about 10:21 a.m. today, May 27, 2009.
After two audible explosions, plumes of smoke rose and the ship slowly descended, apparently settling upright on the bottom. 
"It's looking good, it's looking good, it's going down straight," Capt. Sheri Lohr said as the Vandenberg gradually disappeared. "For once I'm speechless."
Lohr is one of the co-founders of project organizer Artificial Reefs of the Keys.
Sinking the 522-foot-long mothballed Navy ship, the world's second-largest artificial reef, was a decade-long project.

BEHOLD....It was a SIGHT to See!
(Video courtsey of Monroe County Tourist Development) 01:37

USS Vandenburg
United States of America

11:06

Nagoldtalsperre
Germany

Lekuan I & II are classic wall dives on the south side of Bunaken Island. Several large green turtles (Chelonia mydas) sleep on ledges on the walls here. Diagonal-banded sweetlips and pelagic fish such as kawakawa (mackerel tuna) pass by in the blue.

We also meet a clown triggerfish, a blue-face angelfish being shadowed by a trumpetfish, a golden damsel, a male whitespotted boxfish, a doublebar goatfish and a pink anemonefish. A red lionfish hovers over the hard corals in the shallows.

Shot in June 2006 with http://www.TwoFishDivers.com

More Bunaken videos at http://www.bubblevision.com/underwater-videos/Bunaken-Manado/ 02:17

Lekuan I
Indonesia


Foto migliori

foto subacquee

Väderöarna
Sweden

foto subacquee

Le grand coin
France


  Cosa succede

  • lug 30 
    [ Sito d'immersione ] Luckport Canada, Ontario, Lake Huron
  • lug 25 
    [ Foto ] Ilha dos Meros - Ponta Sul Brazil, Rio de Janeiro, Paraty.
  • lug 25 
    [ Foto ] Le Nautilus France, Charente Loir, Pertuis Re Oleron.
  • giu 19 
    [ Foto ] Plage à Pascal Angola.
  • giu 17 
    [ Sito d'immersione ] Manta Cleaning Station French Polynesia, Society, Maupiti
  • giu 17 
    [ Sito d'immersione ] Kalksteinbruch Im Hunsfels Germany, Rheinland-Pfalz
  • mag 28 
    [ Foto ] La Gabinière Ouest France, Mediterranean, Hyeres, Port-Cros.
  • mag 28 
    [ Foto ] La Gabinière Ouest France, Mediterranean, Hyeres, Port-Cros.
  • mag 28 
    [ Foto ] La Gabinière Ouest France, Mediterranean, Hyeres, Port-Cros.
  • mag 28 
    [ Foto ] L Anse au Blé France, Mediterranean, Hyeres, Giens.
  • mag 28 
    [ Foto ] L Anse au Blé France, Mediterranean, Hyeres, Giens.
  • mag 28 
    [ Foto ] L Anse au Blé France, Mediterranean, Hyeres, Giens.
  • mag 28 
    [ Foto ] Le Prophète France, Mediterranean, Cavalaire Sainte Maxime.
  • mag 28 
    [ Foto ] Le Prophète France, Mediterranean, Cavalaire Sainte Maxime.
  • mag 28 
    [ Foto ] Le Prophète France, Mediterranean, Cavalaire Sainte Maxime.
  • mag 28 
    [ Foto ] Le Junker 88 France, Mediterranean, Marseille, Frioule.
  • mag 28 
    [ Foto ] Le Junker 88 France, Mediterranean, Marseille, Frioule.
  • mag 28 
    [ Foto ] Le Junker 88 France, Mediterranean, Marseille, Frioule.
  • mag 28 
    [ Foto ] Le Bestouan France, Mediterranean, Cassis.
  • mag 28 
    [ Foto ] Le Bestouan France, Mediterranean, Cassis.
  • mag 28 
    [ Foto ] Le Bestouan France, Mediterranean, Cassis.
  • mag 28 
    [ Foto ] Grotte des 3 Pépés France, Mediterranean, La Ciotat. entrée
  • mag 28 
    [ Foto ] Le Gaméou France, Mediterranean, La Ciotat.
  • mag 28 
    [ Foto ] Le Gaméou France, Mediterranean, La Ciotat.
  • mag 28 
    [ Foto ] Le Gaméou France, Mediterranean, La Ciotat.

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  • gen 25 
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  • lug 09 
    [ Informazioni ] Phishing pages Hackers succeeded into injecting some scripts into our server file system; mainly phishing pages (fake Dropbox and/or Email client login page; asking you to login with your Gmail/Yahoo account). We are pretty sure these phishing pages were NOT linked/used within this website; probably used in phishing email campaigns. Your community information (email, password, personal information) from this website were not compromised; but if you have been redirected to these pages it is strongly recommended that you change your email password. Sorry for the inconvenience
  • dic 20 
    [ Informazioni ] Wannadive è avaiable in italiano! Hi, Wannadive è avaiable in italiano! Today we are very happy to announce that Wannadive interface is available in Italian. We would like to thanks the following translators for their help and great Christmas gift! * Dave Noise (from Wannasurf) * Riccardo Ghetti (from Wannadive) * Lorenzo Facchin (from Wannadive) All Italian divers can now switch to Italian language by using the language selector at the top of Wannadive pages. Enjoy! We wish you a merry Christmas. WD Team

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