Semaeostomeae Agassiz 1862

Rørvig

Description: This large medusa was seen drifting past the ROV 40 m above the seabed Item Type: Image Title: Poralia sp. Copyright: SERPENT Species: Poralia sp. Site: Indian -- Indian Ocean -- East Africa -- Lavani Depth (m): 2353 Countries: East Africa -- Tanzania Rig: Ocean Rig Poseidon Project Partners: Statoil, Oceaneering ROV: Millenium 93 and 73 Deposited By: Dr Andrew Gates Deposited On: 04 March 2013

Nordsømuseet Hirtshals

Rørvig

Description: A large medusa was seen drifting past the ROV just above the seabed during a video transect survey. This is likely to be Poralia sp. Item Type: Image Title: Poralia sp. Copyright: SERPENT Species: Poralia sp. Site: Indian -- Indian Ocean -- East Africa -- Ngisi-1 Depth (m): 1328 Countries: East Africa -- Tanzania Habitat: Benthic boundary Rig: Deep Sea Metro I Project Partners: BG Group, Oceaneering ROV: Millennium 113 Deposited By: Dr Andrew Gates Deposited On: 14 August 2014

Fiskeri- og Søfartsmuseet, Esbjerg

Dokkedal, Himmerland, Danmark

Description: A large medusa was seen drifting past the ROV just above the seabed during a video transect survey. This is likely to be Poralia sp. Item Type: Image Title: Poralia sp. Copyright: SERPENT Species: Poralia sp. Site: Indian -- Indian Ocean -- East Africa -- Ngisi-1 Depth (m): 1328 Countries: East Africa -- Tanzania Habitat: Benthic boundary Rig: Deep Sea Metro I Project Partners: BG Group, Oceaneering ROV: Millennium 113 Deposited By: Dr Andrew Gates Deposited On: 14 August 2014

Nordsømuseet Hirtshals

Lillebælt ved Stenderup Midtskov, Kolding, Danmark

Description: A large medusa was seen drifting past the ROV just above the seabed during a video transect survey. This is likely to be Poralia sp. Item Type: Image Title: Poralia sp. Copyright: SERPENT Species: Poralia sp. Site: Indian -- Indian Ocean -- East Africa -- Ngisi-1 Depth (m): 1328 Countries: East Africa -- Tanzania Habitat: Benthic boundary Rig: Deep Sea Metro I Project Partners: BG Group, Oceaneering ROV: Millennium 113 Deposited By: Dr Andrew Gates Deposited On: 14 August 2014

Item Type: Image Title: Stygiomedusa jelly Copyright: Serpent Project Species: Stygiomedusa fabulosa Behaviour: Swimming Site: Atlantic -- Gulf of Mexico -- Jack#1 Site Description: Midwater Depth (m): 1750 Latitude: 26 deg 12' 29" N Longitude: 91 deg 26' 35" W Countries: Mexico -- Gulf of Mexico Habitat: Tropical Water Column Rig: Discoverer Deep Seas Project Partners: Transocean, Subsea 7, Chevron USA ROV: Hercules 8 Deposited By: Rob Curry Deposited On: 13 March 2007

Nordsømuseet Hirtshals

Lillebælt ved Stenderup Midtskov, Kolding, Danmark

Sangstrup/Karlby Klint

Item Type: Image Title: Stygiomedusa jelly Copyright: Serpent Project Species: Stygiomedusa fabulosa Behaviour: Swimming Site: Atlantic -- Gulf of Mexico -- Jack#1 Site Description: Midwater Depth (m): 1750 Latitude: 26 deg 12' 29" N Longitude: 91 deg 26' 35" W Countries: Mexico -- Gulf of Mexico Habitat: Tropical Water Column Rig: Discoverer Deep Seas Project Partners: Transocean, Subsea 7, Chevron USA ROV: Hercules 8 Deposited By: Rob Curry Deposited On: 13 March 2007

Sangstrup/Karlby Klint

Item Type: Image Title: Stygiomedusa jelly Copyright: Serpent Project Species: Stygiomedusa fabulosa Behaviour: Swimming Site: Atlantic -- Gulf of Mexico -- Jack#1 Site Description: Midwater Depth (m): 1750 Latitude: 26 deg 12' 29" N Longitude: 91 deg 26' 35" W Countries: Mexico -- Gulf of Mexico Habitat: Tropical Water Column Rig: Discoverer Deep Seas Project Partners: Transocean, Subsea 7, Chevron USA ROV: Hercules 8 Deposited By: Rob Curry Deposited On: 13 March 2007

Item Type: Image Title: Stygiomedusa jelly Copyright: Serpent Project Species: Stygiomedusa fabulosa Behaviour: Swimming Site: Atlantic -- Gulf of Mexico -- Jack#1 Site Description: Midwater Depth (m): 1750 Latitude: 26 deg 12' 29" N Longitude: 91 deg 26' 35" W Countries: Mexico -- Gulf of Mexico Habitat: Tropical Water Column Rig: Discoverer Deep Seas Project Partners: Transocean, Subsea 7, Chevron USA ROV: Hercules 8 Deposited By: Rob Curry Deposited On: 13 March 2007

Item Type: Image Title: Stygiomedusa jelly Copyright: Serpent Project Species: Stygiomedusa fabulosa Behaviour: Swimming Site: Atlantic -- Gulf of Mexico -- Jack#1 Site Description: Midwater Depth (m): 1750 Latitude: 26 deg 12' 29" N Longitude: 91 deg 26' 35" W Countries: Mexico -- Gulf of Mexico Habitat: Tropical Water Column Rig: Discoverer Deep Seas Project Partners: Transocean, Subsea 7, Chevron USA ROV: Hercules 8 Deposited By: Rob Curry Deposited On: 13 March 2007

This medusa, about 35 cm. high, was photographed at 7 m. depth. The egg-yolk, orange feeding lobes hang below the light yellow gonads and the gut. These medusae may occur offshore in huge numbers where they prey on other gelatinous organisms and on crustaceans which they entrap in their venormous tentacles.