Hymedesmiidae Topsent 1928

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

Description: Digital still collected as part of CODEMAP Item Type: Image Copyright: CODEMAP Species: Hymedesmia Site: Atlantic -- Rockall Bank Site Description: Seafloor Depth (m): 217 Latitude: 57 deg 57' 09" N Longitude: 13 deg 58' 41" W Habitat: Bank Rig: RRS James Cook ROV: SeaEye Lynx Deposited By: Ms Katleen Robert Deposited On: 03 October 2013

A species of Ocenebra crawling over the cobalt sponge Acanthancora cyanocrypta, formerly Hymenamphiastra cyanocrypta.From SIMoN photo librarySpecies:Mollusk (unidentified)Cobalt sponge (Acanthancora cyanocrypta)Orange cup coral (Balanophyllia elegans)Location (General):CarmelSite (Specific):Pescadero WashrockDate taken:May, 05 2006Photo credit:Steve Lonhart / NOAA MBNMSPhotographer's comments:REEF dive

Figure 11.Hymedesmia (Hymedesmia) rissoi. A Tornote, sometimes modified into subtylotes and strongyles B Acanthostyles C Arcuate isochelae D Thin sigmas.

Report on the zoological collections made in the Indo-Pacific Ocean during the voyage of H.M.S. 'Alert' 1881-2.London :Printed by order of the Trustees,1884. biodiversitylibrary.org/page/12067777

Imperia, Liguria, Italy

Summerstrand, Eastern Cape, South Africa

Close up of holotype UPSZTY 167252, preserved in ethanol

Holotype

Photograph of spicules from the original slide

Photo of preserved holotype.

Specimen from N of East Maiden, Co Antrim, Northern Ireland. Catalogue# BELUM: Mc3539.

Anse des Cuivres, Marseille, France. 21-07-2005.

Holotype, GNMPorifera907. (A) Tylote. (B) Acanthostyle II. (C) Acanthostyle I. (D) Close-up of basal part of acanthostyle I. (E). Sigma. (F) Isochelae I. (G) Isochelae II. (Figure 2 in Cárdenas & Thollesson (2016))

Description: blue encrusting sponge, common Item Type: Video Title: Blue sponge (Hymedesmia sp.) Species: Hymedesmia sp. Behaviour: filter feeder, encrusted on hard substrates Site: Atlantic -- North Sea -- West of Shetland -- SchiehallionNorth Sea -- West of Shetland -- Schiehallion Site Description: Seafloor Depth (m): 350 Latitude: 60 deg 20' 03" N Longitude: 4 deg 05' 56" W Countries: UK -- West of Shetland Habitat: Temperate Muddy Sand Rig: Paul B Loyd Junior Project Partners: Transocean, Subsea 7, BP ROV: Pioneer 9 Deposited By: Rob Curry Deposited On: 13 March 2007

Cobalt blue sponge (Acanthancora cyanocrypta), surrounding the cucumber Psolus chitinoidesOnce its bright red tentacles have been withdrawn, the cucumber Psolus chitinoides is difficult to see. It is surrounded by the cobalt sponge Acanthancora cyanocrypta, formerly Hymenamphiastra cyanocrypta.

The encrusting sponge Hymedesmia (Stylopus) methanophila sp. nov. and the branching sponge Iophon methanophila sp. nov. colonize asphalt seeps at Campeche Knolls. a Geographic location of Campeche Knolls and the sponge collection sites, Chapopote and Mictlan. b MARUM-QUEST ROV image of H. (S.) methanophila and I. methanophila at Chapopote. Galatheid crabs graze on the sponges. Figure 1 from Rubin-Blum et al. (2019)

Photograph of spicules from the original slide

Preserved holotype from Gulf of Aden.

Holotype RMNH Por. 9956, spicules from Van Soest, 2017: 141, Fig. 87.

Item Type: Video Title: Blue sponge (Hymedesmia sp.) Species: Hymedesmia sp. Behaviour: encrusting filter feeder. With sea urchin (Echinus sp.) Site: Atlantic -- North Sea -- West of Shetland -- SchiehallionNorth Sea -- West of Shetland -- Schiehallion Site Description: Seafloor Depth (m): 350 Latitude: 60 deg 20' 03" N Longitude: 4 deg 05' 56" W Countries: UK -- West of Shetland Habitat: Temperate Muddy Sand Rig: Paul B Loyd Junior Project Partners: Transocean, Subsea 7, BP ROV: Pioneer 9 Deposited By: Rob Curry Deposited On: 13 March 2007

Photograph of spicules from the original slide

Forms encrusting blue sheets. Symbiotic bacteria are responsible for the blue color. Photographed at Cypress Cove, Point Lobos, 17 m.