Clownfish, Philippines. Photo by Stephane Rochon.

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Els millors vídeos

Squat lobsters, hermit crabs, true crabs and sea urchins. Part 3 of my documentary, "Mucky Secrets", about the fascinating marine creatures of the Lembeh Strait in Indonesia.

In this video we first look at more marine crustaceans. First we meet squat lobsters. The elegant squat lobster, Allogalathea elegans, lives commensally on the arms of crinoid feather stars. It feeds on plankton collected by its host, and its colour often matches the crinoid for camouflage.

Next we encounter squat lobsters of the Galathea genus fighting for territory on branching sponges at TK 2.

Hermit crabs don't have a hard carapace like other crabs, so they recycle an empty gastropod shell to protect their soft abdomen. They carry their adopted home around with them, and long eye stalks ensure that the crab has a wide angle of view. We encounter whitespotted hermit crabs, Dardanus megistos, living in empty cone shells and conch shells. We also meet an anemone hermit crab, Dardanus pedunculatus, carrying sea anemones on its back in a classic example of mutual symbiosis.

We then meet a pair of box crabs, Calappa sp.. The male box crab carries the female everywhere with him until she has moulted her shell and is ready to mate.

Camouflage is important for Lembeh's true crabs. We encounter a rear-spined elbow crab, Aulacolambrus hoplonotus, and a decorator spider crab, Achaeus sp., perfectly camouflaged in their environment.

A zebra crab, Zebrida adamsii, clings to the spines on the underside of a highly venomous flower urchin, Toxopneustes pileolus, using the last segment of its legs which has evolved into a hook.

Blue-spotted urchins, Astropyga radiata, are also highly venomous and gather in groups at dive sites such as Hairball. Juvenile emperor red snappers, Lutjanus sebae, often shelter amongst these sea urchins in a commensal relationship.

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.

"Mucky Secrets" is being serialised weekly on YouTube. Please subscribe to my channel to receive notifications of new episodes as I release them. The series will feature a huge diversity of weird and wonderful marine animals including frogfish, nudibranchs, scorpionfish, crabs, shrimps, moray eels, seahorses, octopus, cuttlefish etc..

The music tracks are "Mountain Breeze (pad)" by Purple Planet ( and "Arrival of the Broken Kings" by Klangachse (

Thanks to Tom Cusack of Leafy Lane Productions ( for the music track, "Mystery 2" and to Kevin McLeod of for the music track, "Covert Affair". These tracks are licensed under a Creative Commons Attribution 3.0 Unported license.

Thanks to the staff and keen-eyed divemasters of Two Fish Divers (, 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:

I post updates about my videos here:

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

00:05 Elegant Squat Lobster, Allogalathea elegans, Aer Perang
00:29 Squat Lobster, Galathea sp., TK 2 (Teluk Kembahu)
00:58 White-Spotted Hermit Crab, Dardanus megistos, Two Fish Divers house reef
01:22 White-Spotted Hermit Crab, Dardanus megistos, Retak Larry
01:35 Anemone Hermit Crab, Dardanus pedunculatus, TK 2 (Teluk Kembahu)
01:56 Box Crab, Calappa sp., TK 1 (Teluk Kembahu)
02:55 Rear-Spined Elbow Crab, Aulacolambrus hoplonotus, Nudi Falls
03:08 Decorator Spider Crab, Achaeus sp., Makawide
03:25 Zebra Crab, Zebrida adamsii, Jahir
03:33 Flower Urchin, Toxopneustes pileolus, Jahir
03:40 Zebra Crab, Zebrida adamsii, Jahir
03:56 Blue-Spotted Urchin, Astropyga radiata, Hairball
04:34 Emperor Red Snapper (juvenile), Lutjanus sebae, Jahir
04:42 Bluespotted Stingray, Neotrygon kuhlii, Hairball 05:11

Teluk Kembahu 1

Great visibility for a change! After two weeks of brown water, we were treated to 25 feet vis. 04:25

Veteran's Park
United States of America

Richard Sedlmayr dives from the New York Research Boat : RV Garloo with buddy Pete Bucknell to the ship wreck of the SS Oregon.

Buy Sarah's music: 05:26

United States of America

Northern Red Sea cruise.
Filmed with a Sony HC46 in an Ikelite housing, wide angle, red filter, no artificial light.
Musi : "Tear drops" by Massive Attack, "The Sea" by Morcheeba and "J'ai dormi sous l'eau" by Air 09:56

S.S. Thistlegorm

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White Reef

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    [ 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
  • set 18 
    [ Informació ] Wannadive is safe! Hi, Firefox and Chrome users may experiment some difficulties in accessing Wannadive with their web browser. An ugly screen is telling Wannadive could provide malwares and not be safe!... Our ad server has been attacked Sept 15, and we did fix the problem a couple of hours later. Wannadive is now 100% safe. What still happen? Firefox and Google uses a database to track websites where malwares were detected. We ask Google to remove Wannadive from this database but it can takes a few hours/days? :-( Waiting for Google update, you can use a different web browser to access your favorite dive site atlas and community: Internet Explorer or Opera. Those browsers don\'t check Google\'s database. All the best, Wannadive team
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