Big eye, Philippines. Photo by Stephane Rochon.

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Els millors vídeos

05:15

Kőbánya mine
Hungary

Will upload a better quality version as soon as a decent connexion is available.

Filmed in 3-4 dives during Spring/summer 2008 in Kalypso Bay, Southern Crete - Greece with Sony HC46 in an Ikelite housing, wide angle, red filter, no artificial light.
Music : Pixies "Hey" - The Vision "Jahmilia" and "Dub To A Child" (Kastrierte Philosophen remixes)

www.jeromesmeets.be 07:47

Kalypso Walls
Greece

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

http://cuttlefishcountry.com Each Winter, Giant Cuttlefish gather in their thousands near Whyalla to court, mate and lay their eggs. The only known place in the world this can be witnessed is in the shallow waters off Point Lowly, in the upper Spencer Gulf of South Australia. A relative of squid and octopus, this animal's intelligence and versatility is amazing to behold. Adult males strobe zebra-patterns along their mantles and down their tentacles, stretching out to impress the females and contest other males for their attention. Smaller females can be selective about the paternity of their young, mating several times, storing sperm packets from several males and finally selecting the father according to her own preferences. After mating and laying, both male and female Giant Cuttlefish die, making their population particularly vulnerable to commercial fishing and environmental change. If the animals are fished before they reach the breeding grounds, they will have never had the opportunity to reproduce! 

There are presently a number of multi-million dollar proposed industrial developments pegged for the same strip of coastline by Point Lowly, and fierce opposition to the developments has arisen from community groups, scientists and conservationists. Immediate risks to the cuttlefish include damage to their organs received from low frequency sound (the product of construction and shipping) and the potential for raised salinity, a direct bi-product of the desalination process, altering the delicate conditions their eggs require in order to successfully hatch. 

This story is being explored in detail in the forthcoming danimations documentary film 'Cuttlefish Country' (working title) due for release in October 2011. Directed by Dan Monceaux and produced with Emma Monceaux, the film will survey the current state of play on the Point Lowly developments, and the extreme differences of opinion and agenda at work. 03:07

Port Bonython Fenceline
Australia


Les millors imatges

Fotos de busseig

Stoney Cove
United Kingdom

Fotos de busseig

Wata Mula
Curaçao

Fotos de busseig

Wildcat
France

Fotos de busseig

Leema Rock
Oman


  Què està passant

  • abr 13 
    [ Loc d'immersió ] Manta Reef Mozambique, Inhambane
  • abr 13 
    [ Foto ] The Zenobia Cyprus.
  • abr 13 
    [ Foto ] The Zenobia Cyprus.
  • abr 13 
    [ Foto ] The Zenobia Cyprus.
  • abr 13 
    [ Foto ] The Zenobia Cyprus.
  • abr 13 
    [ Foto ] The Zenobia Cyprus.
  • abr 13 
    [ Foto ] The Zenobia Cyprus.
  • abr 13 
    [ Foto ] The Zenobia Cyprus.
  • abr 04 
    [ Loc d'immersió ] Kulau Lodge beach wrecks Papua New Guinea, New Britain
  • abr 04 
    [ Foto ] South Lagoona Reef Egypt, Strait of Tiran. Hawksbill turtle
  • abr 03 
    [ Loc d'immersió ] 130-183 Bridge USA, South Carolina
  • abr 03 
    [ Foto ] South Lagoona Reef Egypt, Strait of Tiran. Blue spotted sting ray
  • abr 03 
    [ Foto ] South Lagoona Reef Egypt, Strait of Tiran. Scorpion fishes
  • abr 03 
    [ Foto ] Ras Umm Sid Egypt, Sharm el Sheikh. Scorpion fish
  • mar 30 
    [ Foto ] Ilha do Campeche Brazil, Santa Catarina, Bombinhas Florianopolis.
  • mar 30 
    [ Foto ] Ilha do Campeche Brazil, Santa Catarina, Bombinhas Florianopolis.
  • mar 30 
    [ Foto ] Ilha do Campeche Brazil, Santa Catarina, Bombinhas Florianopolis.
  • mar 25 
    [ Loc d'immersió ] Raffles Lighthouse Jetty Singapore, Pulau Hantu
  • feb 18 
    [ Loc d'immersió ] Ojamo Mine Finland, Southern Finland
  • feb 18 
    [ Foto ] Bulthama Bahrain.
  • feb 18 
    [ Loc d'immersió ] Bulthama Bahrain
  • feb 10 
    [ Loc d'immersió ] Front Porch Bonaire, Bonnaire North
  • feb 06 
    [ Loc d'immersió ] Les Buharats France, Brittany North, Saint Malo
  • feb 04 
    [ Foto ] Dolini Roncsok Croatia, North adriatic, Rab.
  • feb 04 
    [ Foto ] Dolini Roncsok Croatia, North adriatic, Rab.

  Noves informacions del lloc

  • gen 25 
    [ Informació ] Secured navigation Wannadive is now only available thru secured (SSL/HTTPs) navigation. Feel free to report any bugs or wired behavior while browsing/contributing to the dive site atlas and/or thru the Android application.
  • jul 09 
    [ Informació ] 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
  • des 20 
    [ Informació ] 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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