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Description: This one is a Muusoctopus (the new name for Benthoctopus). It is not Muusoctopus januarii and certainly not Pteroctopus tetracirrhus. It might be a Muusoctopus johnsonianus but they are usually paler that this with more distinct reverse countershading. I suspect that there are undescribed species in the Gulf of Mexico and this may be one.
Octopus with 2 rows of suckers on each arm and 8 arms. This narrows it down a bit. It is a female as no reproductive arm (hectocotylus) is visible on the third right arm. An old reference on the recorded deep-water octopus from the GoM (Voss, 1956) seems out of date compared to modern knowledge. Item Type: Image Title: Octopus (Muusoctopus johnsonianus? or new species) from Gulf of Mexico Species: Muusoctopus johnsonianus Site: Atlantic -- Gulf of Mexico -- Gulf of Mexico Site Description: Seafloor Depth (m): 1816 Latitude: 27 deg 20' 00" N Longitude: 88 deg 12' 00" W Countries: USA -- USA: Gulf of Mexico Rig: MV Geoholm ROV: Triton XLS 11 Deposited By: Dr Daniel Jones Deposited On: 06 August 2013
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Here is a closeup of the suckers on an individual with about a 1m arm spread.
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Description: This one is a Muusoctopus (the new name for Benthoctopus). It is not Muusoctopus januarii and certainly not Pteroctopus tetracirrhus. It might be a Muusoctopus johnsonianus but they are usually paler that this with more distinct reverse countershading. I suspect that there are undescribed species in the Gulf of Mexico and this may be one.
Octopus with 2 rows of suckers on each arm and 8 arms. This narrows it down a bit. It is a female as no reproductive arm (hectocotylus) is visible on the third right arm. An old reference on the recorded deep-water octopus from the GoM (Voss, 1956) seems out of date compared to modern knowledge. Item Type: Image Title: Octopus (Muusoctopus johnsonianus? or new species) from Gulf of Mexico Species: Muusoctopus johnsonianus Site: Atlantic -- Gulf of Mexico -- Gulf of Mexico Site Description: Seafloor Depth (m): 1816 Latitude: 27 deg 20' 00" N Longitude: 88 deg 12' 00" W Countries: USA -- USA: Gulf of Mexico Rig: MV Geoholm ROV: Triton XLS 11 Deposited By: Dr Daniel Jones Deposited On: 06 August 2013
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Description: Muusoctopus sp. associated with a subsea structure off Ghana. Not the double row of suckers. Item Type: Image Title: Muusoctopus Copyright: SERPENT Species: Muusoctopus sp. Behaviour: Associated with subsea structure Site: Atlantic -- Central Atlantic -- GhanaRegions -- West Africa -- Ghana Site Description: Seafloor Depth (m): 1623 Countries: Sites -- Atlantic -- Central Atlantic -- GhanaWest Africa -- Ghana Habitat: benthic Project Partners: Subsea7, Tullow Oil ROV: Hercules 17 Deposited By: Mr Rob Curry Deposited On: 08 January 2016
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Description: Muusoctopus sp. associated with a subsea structure off Ghana. Not the double row of suckers. Item Type: Image Title: Muusoctopus Copyright: SERPENT Species: Muusoctopus sp. Behaviour: Associated with subsea structure Site: Atlantic -- Central Atlantic -- GhanaRegions -- West Africa -- Ghana Site Description: Seafloor Depth (m): 1623 Countries: Sites -- Atlantic -- Central Atlantic -- GhanaWest Africa -- Ghana Habitat: benthic Project Partners: Subsea7, Tullow Oil ROV: Hercules 17 Deposited By: Mr Rob Curry Deposited On: 08 January 2016
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Description: Muusoctopus sp. associated with a subsea structure off Ghana. Not the double row of suckers. Item Type: Image Title: Muusoctopus Copyright: SERPENT Species: Muusoctopus sp. Behaviour: Associated with subsea structure Site: Atlantic -- Central Atlantic -- GhanaRegions -- West Africa -- Ghana Site Description: Seafloor Depth (m): 1623 Countries: Sites -- Atlantic -- Central Atlantic -- GhanaWest Africa -- Ghana Habitat: benthic Project Partners: Subsea7, Tullow Oil ROV: Hercules 17 Deposited By: Mr Rob Curry Deposited On: 08 January 2016
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This view of a dissected E. dofleini shows the salivary glands. The salivary glands of many octopus secrete poison which can be excreted through the salivary papilla in the mouth and used to subdue prey.
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Description: Muusoctopus sp. associated with a subsea structure off Ghana. Not the double row of suckers. Item Type: Image Title: Muusoctopus Copyright: SERPENT Species: Muusoctopus sp. Behaviour: Associated with subsea structure Site: Atlantic -- Central Atlantic -- GhanaRegions -- West Africa -- Ghana Site Description: Seafloor Depth (m): 1623 Countries: Sites -- Atlantic -- Central Atlantic -- GhanaWest Africa -- Ghana Habitat: benthic Project Partners: Subsea7, Tullow Oil ROV: Hercules 17 Deposited By: Mr Rob Curry Deposited On: 08 January 2016
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Description: Muusoctopus sp. associated with a subsea structure off Ghana. Not the double row of suckers. Item Type: Image Title: Muusoctopus Copyright: SERPENT Species: Muusoctopus sp. Behaviour: Associated with subsea structure Site: Atlantic -- Central Atlantic -- GhanaRegions -- West Africa -- Ghana Site Description: Seafloor Depth (m): 1623 Countries: Sites -- Atlantic -- Central Atlantic -- GhanaWest Africa -- Ghana Habitat: benthic Project Partners: Subsea7, Tullow Oil ROV: Hercules 17 Deposited By: Mr Rob Curry Deposited On: 08 January 2016
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This dogfish (Squalus acanthias) skeleton was found outside an octopus den in 2005 by divers. Finders include Jon Mayberry (L), Kirt Onthank (middle), and Nick Marsh
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Enteroctopus dofleini in a seawater tank at Rosario. Arm spread about 1.5 meters (Photo by: Dave Cowles, July 2005)
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