Clownfish, Philippines. Photo by Stephane Rochon.

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Lionfish, Sea Urchins, Crown of Thorns - Reef Life of the Andaman - Part 17

Lionfishes, sea urchins and the crown of thorns starfish. Part 17 of my DVD, "Reef Life of the Andaman", available at http://www.bubblevision.com/marine-life-DVD.htm

In this video we take a look at marine life from Thailand and Burma that uses venomous spines as a form of defence.

Of the lionfish family, the red lionfish, Pterois volitans, is most common across the Andaman Sea, but it is possible that some or all of these are actually the similar Devil Firefish, Pterois miles. Both species are very similar and possess venomous spines along their fins. We meet specimens across various dive sites near Phuket, at Richelieu Rock, and at Black Rock in the Mergui Archipelago.

Other species that are included are the zebra lionfish, Dendrochirus zebra, the rare frillfin turkeyfish, Pterois mombasae, and the spotfin lionfish, Pteroid antennata.

We then look at the crown-of-thorns starfish, or crown-of-thorns sea star, Acanthaster planci, which also has stinging, venomous spines on its body that contain a neuro-toxin intended to cause paralysis. This starfish feeds on hard corals and human intervention has been required in some parts of the world where these starfish threatened to destroy enitre reef systems.

Finally we examine sea urchins, specifically the black longspine urchin, Diadema setosum, which is prevalent across the Andaman Sea. We see a large colony of them at Racha Yai Island, near Phuket in Thailand.

The full narration is available as English, German or Spanish subtitles by turning on the closed captions (CC). There are also closed captions available showing scientific and common names of the marine life in English, German or Dutch, along with dive site names.

Thanks to Erik Verkoyen for the music track, "Black Corals".

"Reef Life of the Andaman" is being serialised weekly on YouTube. Please subscribe to my channel to receive notifications of new episodes as I release them. The series features descriptions of 213 different marine species including more than 100 tropical fish, along with sharks, rays, moray eels, crabs, lobsters, shrimps, sea slugs, cuttlefish, squid, octopus, turtles, sea snakes, starfish, sea cucumbers, corals, worms etc..

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

I post updates about my videos, and interesting underwater videos from other filmmakers here:
http://www.facebook.com/bubblevision
http://www.twitter.com/nicholashope

The video was shot by Nick Hope with a Sony VX2000 DV camera in a Gates housing. It was edited in Sony Vegas Pro then deinterlaced with QTGMC and upscaled to 720p HD in AviSynth.

Thanks to Santana Diving of Phuket (http://www.santanaphuket.com), to Elfi and Uli Erfort for help with the German translation, and to Frank Nelissen for the Dutch subtitles.

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

00:00 Stonefish, Synanceia verrucosa, Boonsung Wreck
00:05 King Cruiser Wreck
00:17 Red Lionfish, Pterois volitans, or Devil Firefish, Pterois miles, King Cruiser
00:28 Red Lionfish, Pterois volitans, or Devil Firefish, Pterois miles, Koh Bida Nok
00:36 Red Lionfish, Pterois volitans, or Devil Firefish, Pterois miles, Koh Tachai
00:42 Red Lionfish, Pterois volitans, or Devil Firefish, Pterois miles, Anemone Reef
00:50 Red Lionfish, Pterois volitans, or Devil Firefish, Pterois miles, Black Rock
00:58 Red Lionfish, Pterois volitans, or Devil Firefish, Pterois miles, Richelieu Rock
01:14 Zebra Lionfish, Dendrochirus zebra, Shark Cave
01:21 Zebra Lionfish, Dendrochirus zebra, Lucy's Reef, Racha Yai
01:25 Zebra Lionfish, Dendrochirus zebra, Fan Forest Pinnacle
01:42 Frillfin turkeyfish, Pterois mombasae, Richelieu Rock
01:56 Spotfin Lionfish, Pterois antennata, Staghorn Reef, Racha Yai
02:09 Spotfin Lionfish, Pterois antennata, Koh Tachai
02:13 Crown-Of-Thorns Starfish, Acanthaster planci, Koh Tachai
02:19 Crown-Of-Thorns Starfish, Acanthaster planci, Lucy's Reef, Racha Yai
02:23 Crown-Of-Thorns Starfish, Acanthaster planci, Bungalow Bay, Racha Yai
02:48 Black Longspine Urchin, Diadema setosum, Richelieu Rock
03:00 Black Longspine Urchin, Diadema setosum, Shark Point
03:06 Black Longspine Urchin, Diadema setosum, Koh Doc Mai
03:14 Sea Urchin Cardinalfish, Siphamia versicolor, Koh Bon 03:47

Ko Tachai
Thailand

05:57

The Caves
Canada

Polychaete worms and sea cucumbers. Part 23 of my DVD, "Reef Life of the Andaman", available at http://www.bubblevision.com/marine-life-DVD.htm

First we look at a feather duster worm, Sabellastarte sp., at Shark Cave in the Burma's Mergui Archipelago, and a hard tube coco worm, Protula bispiralis, at Richelieu Rock, north of the Similan Islands in Thailand. These polychate worms are rooted statically to the reef and feed by filtering plankton from the water with their tentacles and passing it into the central mouth.

Colorful Christmas tree worms, Spirobranchus giganteus, are common at many dive sites throughout the Andaman Sea. They embed themselves into porous stony corals and are highly sensitive to disturbances. At the slightest sign of danger, the worm retracts into the coral and seals the opening.

Also seen in the Mergui Archipelago, the large burrowing sea cucumber, Neothyonidium magnum, a type of Echinoderm, is another filter feeder. It roots itself into the substrate and holds its outer tentacles in the current. When it has captured sufficient plankton the tentacles reach down toward the centre, allowing the smaller inner tentacles to scoop the food into the mouth.

The Graeffe's sea cucumber, Pearsonothuria graeffei, is common at shallow depths in the Andaman Sea. Its mouth contains 25 adhesive black tentacles which it uses to walk over the reef and to pick up food from the substrate.

The mouth of the amberfish sea cucumber, Thelenota anax, contains 18 tentacles and is underneath the body. After digesting what it can from the material it has ingested from the seabed, the waste products are expelled at the anus. The sea cucumber also breathes through the anus by sucking water in and out.

The full narration is available as English, German or Spanish subtitles by turning on the closed captions (CC). There are also closed captions available showing scientific and common names of the marine life in English, German or Dutch, along with dive site names.

"Reef Life of the Andaman" is being serialised weekly on YouTube. Please subscribe to my channel to receive notifications of new episodes as I release them. The series features descriptions of 213 different marine species including more than 100 tropical fish, along with sharks, rays, moray eels, crabs, lobsters, shrimps, sea slugs, cuttlefish, squid, octopus, turtles, sea snakes, starfish, sea cucumbers, corals, worms etc..

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

I post updates about my videos, and interesting underwater videos from other filmmakers here:
http://www.facebook.com/bubblevision
http://www.twitter.com/nicholashope

The video was shot by Nick Hope with a Sony VX2000 DV camera in a Gates housing. It was edited in Sony Vegas Pro then deinterlaced with QTGMC and upscaled to 720p HD in AviSynth.

Thanks to Santana Diving of Phuket (http://www.santanaphuket.com), to Elfi and Uli Erfort and Daniel Bruehwiler for help with the German translation, and to Frank Nelissen for the Dutch subtitles.

Full list of polychaete worms, sea cucumbers and dive sites featured in this video:

00:00 Feather Duster Worm, Sabellastarte sp., Shark Cave
00:05 Hard Tube Coco Worm, Protula bispiralis, Richelieu Rock
00:14 Christmas Tree Worms, Spirobranchus giganteus, Koh Tachai
00:19 Christmas Tree Worm, Spirobranchus giganteus, Racha Noi
00:22 Christmas Tree Worm, Spirobranchus giganteus, Little Torres
00:26 Christmas Tree Worms, Spirobranchus giganteus, Koh Tachai
00:36 Christmas Tree Worms, Spirobranchus giganteus, Silvertip Bank
00:42 Christmas Tree Worms, Spirobranchus giganteus, Koh Tachai
00:50 Christmas Tree Worm, Spirobranchus giganteus, Little Torres
00:55 Christmas Tree Worm, Spirobranchus giganteus, Gabi's Reef, Racha Noi
01:00 Large Burrowing Sea Cucumber, Neothyonidium magnum, Moving Wall
01:17 Large Burrowing Sea Cucumber, Neothyonidium magnum, Black Rock
01:48 Graeffe's Sea Cucumber, Pearsonothuria graeffei, South Twin
01:52 Graeffe's Sea Cucumber, Pearsonothuria graeffei, Staghorn Reef, Racha Yai
02:15 Graeffe's Sea Cucumber, Pearsonothuria graeffei, Home Run, Racha Yai
02:33 Amberfish Sea Cucumber, Thelenota anax, Racha Noi
02:49 Amberfish Sea Cucumber, Thelenota anax, Bay 4, Racha Yai
03:06 Graeffe's Sea Cucumber, Pearsonothuria graeffei, North Point, Racha Noi
03:16 Graeffe's Sea Cucumber, Pearsonothuria graeffei, Koh Ha 03:47

Staghorn reef
Thailand

This is in HD so please click on the '360p' at the bottom right of the video window and increase the quality before watching. Tank Cave has more than 8km of line in it and is on average 10m deep allowing very long dives with no deco to be done.
Filmed by Anna Kozlova, reproduced with permission. For higher quality video see her website at www.diverclub.ru/eng/ 09:59

Tank Cave
Australia


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