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Fungiacyathus (Bathyactis) marenzelleri Marenzeller's stony coral

Fungiacyathus (Bathyactis) marenzelleri is commonly referred to as Marenzeller's stony coral. Difficulty in the aquarium: Not suitable for aquarium keeping. Toxicity: Toxic hazard unknown.

Profilbild Urheber Smithsonian Institution, NMNH, Invertebrate Zoology, UAS

Foto: Ostpazifik USA

/ Foto der NOAA /CC0 1.0 Universal, gemeinfrei
Courtesy of the author Smithsonian Institution, NMNH, Invertebrate Zoology, UAS . Please visit www.gbif.org for more information.

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lexID:
17500 
AphiaID:
135205 
Scientific:
Fungiacyathus (Bathyactis) marenzelleri 
German:
Marenzellers Steinkoralle 
English:
Marenzeller's Stony Coral 
Category:
Stenkoraller - SPS 
Family tree:
Animalia (Kingdom) > Cnidaria (Phylum) > Hexacorallia (Class) > Scleractinia (Order) > Fungiacyathidae (Family) > Fungiacyathus (Genus) > (Bathyactis) marenzelleri (Species) 
Initial determination:
(Vaughan, ), 1906 
Occurrence:
Alaska (Western Atlantic), Aleutian Islands, Angola, Antarctica, Argentina, Australia, Azores, Bay of Biscay, Bering Sea, Bermuda, California, Cambodia, Canada Eastern Pacific, Chile, circum antarctic, Circumtropic, Columbia, Costa Rica, Cuba, East cost of USA, European Coasts, France, Greenland, Gulf of Alaska (Pacific), Haiti, Indo Pacific, Indonesia, Ireland, Japan, Kuril Islands, Labrador Península, Lord Howe Island, Malpelo Island, Mexico (East Pacific), Moluccas, Morocco, Namibia, New South Wales (Australia), New Zealand, Newfoundland, Northeast Atlantic, Northeast Pacific Ocean, Panama, Papua New Guinea, Peru, Portugal, Scotland, Spain, Tasman Sea, The Bahamas, the British Isles, the Cape Verde Archipelago, the Caribbean, the Falkland Islands, Virgin Islands, U.S., Western Australia, Western Pacific Ocean 
Marine Zone:
Abyssopelagial
The abyssopelagial ranges from 4000 to 6000 meters deep, here the temperature is close to freezing, the pressure is 400 to 600 times higher than at the surface and there is no sunlight. 
Sea depth:
179 - 6328 Meter 
Habitats:
Deep sea, Deep Sea Basin, Deep Sea Trenches, Deep-sea mountains 
Size:
0.39" - 1.57" (1cm - 4cm) 
Temperature:
0,5 °F - 41 °F (0,5°C - 5°C) 
Food:
azooxanthellat, nonphotosynthetic, Marine snow, Organic suspended sediment , Plankton, Suspension feeder 
Difficulty:
Not suitable for aquarium keeping 
Offspring:
Not available as offspring 
Toxicity:
Toxic hazard unknown 
CITES:
Appendix II ((commercial trade possible after a safety assessment by the exporting country)) 
Red List:
Not evaluated (NE) 
Related species at
Catalog of Life:
  • Fungiacyathus crispus
  • Fungiacyathus dennanti
  • Fungiacyathus fissidiscus
  • Fungiacyathus fissilis
  • Fungiacyathus fragilis
  • Fungiacyathus granulosus
  • Fungiacyathus hydra
  • Fungiacyathus marenzelleri
  • Fungiacyathus margaretae
  • Fungiacyathus multicarinatus
 
More related species
in this lexicon:
 
Author:
Publisher:
Meerwasser-Lexikon.de
Created:
Last edit:
2025-08-29 19:03:49 

Info

Fungiacyathus (Bathyactis) marenzelleri is a solitary, azooxanthellate deep-sea stony coral. It is very small, but holds the “record in Guisses' Book of Marine Corals” as it is the deepest known stony coral. It can live at a depth of up to 6,328 meters, in a cold, surreal environment with a pressure of over 600 bar, That's 6,000 tons per square meter or 600 kg per square centimeter!

The corallite of Fungiacyathus (Bathyactis) marenzelleri is fragile, light, and disc-shaped, with a very thin (0.15 mm), flat to slightly domed, circular base up to 27 mm in diameter in specimens from the North Pacific.
The costae are thin, finely toothed, slightly twisted ridges up to 1 mm high.

The color of the corallites is white or light brown.

Synonyms:
Bathyactis marenzelleri Vaughan, 1906 · unaccepted > superseded combination (basionym)
Bathytrochus hexagonalis Gravier, 1915 · unaccepted > junior subjective synonym (misspelling)
Bathytrochus hexagonus Gravier, 1915 · unaccepted > junior subjective synonym
Deltocyathus hexagonus (Gravier, 1915) · unaccepted > junior subjective synonym
Fungiacyathus (Bathyactis) symmetricus aleuticus Keller, 1976 · unaccepted > junior subjective synonym
Fungiacyathus (Bathyactis) symmetricus durus Keller, 1976 · unaccepted > junior subjective synonym
Fungiacyathus (Bathyactis) symmetricus fragilis Keller, 1976 · unaccepted > junior subjective synonym
Fungiacyathus aleuticus Keller, 1976 · unaccepted > junior subjective synonym
Fungiacyathus durus Keller, 1976 · unaccepted > junior subjective synonym
Fungiacyathus hexagonus (Gravier, 1915) · unaccepted > junior subjective synonym
Fungiacyathus marenzelleri (Vaughan, 1906) · alternative representation
Fungiacyathus symmetricus aleuticus Keller, 1976 · unaccepted > junior subjective synonym
Fungiacyathus symmetricus durus Keller, 1976 · unaccepted > junior subjective synonym
Fungiacyathus symmetricus fragilis Keller, 1976 · unaccepted > junior subjective synonym

External links

  1. (GBIF) Global Core Biodata Resource (en). Abgerufen am 09.06.2025.
  2. A review of current knowledge on reproductive and larval processes of deep‑sea corals (en). Abgerufen am 09.06.2025.
  3. A review of the Scleractinia (Cnidaria: Anthozoa) of Chile, with the description of two new species (en). Abgerufen am 09.06.2025.
  4. Checklist of valid names and synonyms of stony corals (Anthozoa: Scleractinia) from the eastern Pacific (en). Abgerufen am 09.06.2025.
  5. Cold-water Corals Online Appendix (en). Abgerufen am 09.06.2025.
  6. Comparative depth distribution of corallimorpharians and scleractinians (Cnidaria: Anthozoa) (en). Abgerufen am 09.06.2025.
  7. Deep-sea fauna of European seas: An annotated species check-list of benthic invertebrates living deeper than 2000 m in the seas bordering Europe. Scleractinia, Seite 249 (en). Abgerufen am 09.06.2025.
  8. Erstbeschreibung als Bathyactis marenzelleri Vaughan, 1906, Seite 66 (en). Abgerufen am 09.06.2025.
  9. Reproductive ecology of a polar deep-sea scleractinian, Fungiacyathus marenzelleri (Vaughan, 1906) (en). Abgerufen am 09.06.2025.
  10. Scleractinia of the Temperate North Pacific, Seite 15 (en). Abgerufen am 09.06.2025.
  11. Scleractinia of the Temperate North Pacific, Seite 15 (en). Abgerufen am 09.06.2025.
  12. The Azooxanthellate Scleractinia (Coelenterata: Anthozoa) of Australia (en). Abgerufen am 09.06.2025.
  13. The Marine Fauna of New Zealand: Scleractinia (Cnidaria : Anthozoa), Seite 33 (en). Abgerufen am 09.06.2025.

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Foto: Ostpazifik USA

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