Hydrozoans

A short episode from CreatureCast, a podcast from the Dunn lab at Brown University, about the unexpected world of animals. This episode is made by Sophia Tintori and features Trisha Towanda from the University of Rhode Island. This video is released under a Creative Commons Attribution-Noncommercia-Share Alike 3.0 license. Check out CreatureCast.org for more stories.

Description: Footage of an Apolemia sp. siphonophore in the Gulf of Mexico Item Type: Video Title: Apolemia sp. video from the Gulf of Mexico Species: Apolemia sp. Behaviour: Floating through water column Site: Atlantic -- Gulf of Mexico -- Green Canyon 821 Site Description: Seafloor Depth (m): 1078 Latitude: 27 deg 09' 20" N Longitude: 90 deg 29' 43" W Countries: Mexico -- Gulf of Mexico Rig: Transocean Marianas Project Partners: Oceaneering, BP, Transocean ROV: Millennium Deposited By: Rob Curry Deposited On: 15 May 2007

Description: A Nanomia sp. siphonophore floating in the water column in the Gulf of Mexico Item Type: Video Title: Nanomia sp. siphonophore in the Gulf of Mexico Species: Nanomia sp. Behaviour: Swimming in water column Site: Atlantic -- Gulf of Mexico -- Green Canyon 821 Site Description: Midwater Depth (m): 625 Latitude: 27 deg 09' 20" N Longitude: 90 deg 29' 43" W Countries: Mexico -- Gulf of Mexico Rig: Transocean Marianas Project Partners: BP, Oceaneering, Transocean ROV: Millennium Deposited By: Rob Curry Deposited On: 16 May 2007

South Pacific Ocean, Duration 10 seconds

Coral Sea, Duration 26 seconds

Coral Sea, Duration 20 seconds, Shot includes Pomacanthus semicirculatus (Semicircle angelfish)

South Pacific Ocean, Duration 10 seconds

In this episode of CreatureCast, Dr. Casey Dunn from Brown University talks about how siphonophores shake up the idea of individuality. Deep sea footage is courtesy of Dr. Steve Haddock at the Monterey Bay Aquarium Research Institute. Still are from papers by Haeckel, Bigelow and Vogt. Music by Lucky Dragons. Edited by Sophia Tintori. This work is provided under a Creative Commons Attribution-Noncommercial-Share Alike license.

South Pacific Ocean, Duration 10 seconds

Coral Sea, Duration 44 seconds

Gymnangium gracilicaule is not the primary subject of the video clip; the primary subject is Antennarius pictus (Painted frogfish). Indo-Pacific, Duration 63 seconds

South Pacific Ocean, Duration 10 seconds

CreatureCast.org brings you stories about the unexpected world of animals. In this episode, Dr. Phil Pugh talks about studying jellyfish that cannot be collected in nets, and about his first times seeing live ones. These jellyfish are called siphonophores.This work is provided under a Creative Commons Attribution-Noncommercial No-Derivatives license. Music by The Golden Hours. Many thanks to the Bioluminescence Lab at the Monterey Bay Aquarium Research Institute for the submarine footage, which was taken at 1,044 meters depth.

Description: Solmissus Item Type: Video Title: Cnidarian Copyright: Gulf SERPENT Species: Solmissus Site: Atlantic -- Gulf of Mexico -- Walker Ridge 677 Site Description: Midwater Depth (m): 478.5 Latitude: 26 deg 17' 57" N Longitude: 91 deg 10' 28" W Countries: USA -- USA: Gulf of Mexico Rig: Discover Deepseas Project Partners: Chevron, Subsea7, Transocean ROV: Millennium Deposited By: Mark Benfield Deposited On: 03 September 2009

South Pacific Ocean, Duration 11 seconds

Here is some footage of the hydroid Podocoryna carnea releasing baby jellyfish. Footage is by Sophia Tintori, and released under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 license. Check out CreatureCast.org for stories about animals.

Description: A Solmissus sp. in the water column in the Gulf of Mexico Item Type: Video Title: Narcomedusa in the Gulf of Mexico Species: Solmissus sp. Behaviour: Swimming in water column Site: Atlantic -- Gulf of Mexico -- Green Canyon 821 Site Description: Midwater Depth (m): 397 Latitude: 27 deg 09' 20" N Longitude: 90 deg 29' 43" W Countries: Mexico -- Gulf of Mexico Habitat: Water temp 13.48 degrees celcius Rig: Transocean Marianas Project Partners: BP, Oceaneering, Transocean ROV: Millennium Deposited By: Rob Curry Deposited On: 17 May 2007

South Pacific Ocean, Duration 10 seconds

Riley Thompson made this animation about the fascinating lifecycle of narco babies.We usually don't think of babies that grow inside their mothers as parasites, but sometimes the lines get very blurry. This is especially true in Narcomedusae, a group of poorly known jellyfish found throughout the world's oceans. Some species of Narcomedusae (affectionately called narcos by the people that study them) can grow inside their own mother, who provides nourishment and a safe environment. The narco babies can then leave their mother, find another jellyfish of an entirely different species, attach to its flesh, and thrive on the nourishment and safe environment that it provides. The physiological interaction of baby and host is similar in both cases - the host provides, the baby takes. But in one case the host is providing for its own offspring, in the other it is providing for somebody else's offspring.Thanks to Rebecca Helm (brown.edu/Faculty/Dunn_Lab/index.php?subject=People) and Fabien Lombard (fabien.lombard1.free.fr/indexengl.htm) for their help translating the wonderful paper on narco life cycles: Bouillon, J. (1987) Considérations sur le developpement des Narcomeduses et sur leur position phylogénétique. Indo-Malayan Zoology 4 : 189-278.Special thanks to Marjorie Thompson, Robert Sandler, and the Brown University Science Center.The music is by Tony Higgins, aka junior85: freemusicarchive.org/music/junior85/As_It_Happens_pts_1-5_1334/As_It_Happens_pt_5Visit creaturecast.org for more stories about the unexpected world of Biology.

Description: Stephanomia amphytridis in the water column in the Gulf of Mexico Item Type: Video Title: Stephanomia sp. siphonophore in the Gulf of Mexico Species: Stephanomia amphytridis Behaviour: Floating in water column Site: Atlantic -- Gulf of Mexico -- Green Canyon 821 Site Description: Midwater Depth (m): 306 Latitude: 27 deg 09' 20" N Longitude: 90 deg 29' 43" W Countries: Mexico -- Gulf of Mexico Habitat: Water temp 9.98 degrees celcius Rig: Transocean Marianas Project Partners: BP, Oceaneering, Transocean ROV: Millennium Deposited By: Rob Curry Deposited On: 17 May 2007

South Pacific Ocean, Duration 48 seconds

These three specimens belong to two new species of Apolemia (Hydrozoa:Siphonophora) to be described in a forthcoming publication. The video was filmed from the ROV Doc Rickets (Monterey Bay Aquarium Research Institute).

Millepora sp. 1 is not the primary subject of the video clip; the primary subject is Dascyllus reticulatus (Reticulated damsel). South Pacific Ocean, Duration 111 seconds

Coral Sea, Duration 15 seconds