Overview

Comprehensive Description

Biology

A red deep-water domed jellyfish
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Disk flat, dome transparent, lenticular (lens-shaped); Internal structures and exumbella (bottom side) dark red; 20-30 tentacles alternating with marginal rhopalia (sense organ); Umbella margins divided into lappets (a pair between each tentacle); Circular coronal furrow in exumbella deep; in life, one tentacles always trails elongated
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Ecology

Habitat

Depth range based on 735 specimens in 11 taxa.
Water temperature and chemistry ranges based on 683 samples.

Environmental ranges
  Depth range (m): 0 - 5316
  Temperature range (°C): -1.525 - 19.818
  Nitrate (umol/L): 0.495 - 45.073
  Salinity (PPS): 33.672 - 36.588
  Oxygen (ml/l): 0.303 - 8.070
  Phosphate (umol/l): 0.046 - 3.500
  Silicate (umol/l): 0.908 - 219.848

Graphical representation

Depth range (m): 0 - 5316

Temperature range (°C): -1.525 - 19.818

Nitrate (umol/L): 0.495 - 45.073

Salinity (PPS): 33.672 - 36.588

Oxygen (ml/l): 0.303 - 8.070

Phosphate (umol/l): 0.046 - 3.500

Silicate (umol/l): 0.908 - 219.848
 
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Arctic basins; Meso-Bathypelagic, concentrated between 900 and 1400 m, observation beween 650 and 2200 m; Commonly observed by ROVs, but rare in plankton net colelction; Re-examination of material from older cruises shows it to be common throughout the Arctic
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Trophic Strategy

Diet is unknown
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Life History and Behavior

Life Cycle

Holoplanktonic, without a polyp stage; embyro incubated in gonadal pouched; released near fully developed; Life span unknown; Taxonomic Note; The validity of Atolla tenella remains in requestioned, or if this is simply Atolla wyvillei Haeckel, 1880
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Wikipedia

Atolla

Atolla is a genus of crown jellyfish which was proposed by Ernst Haeckel in 1880 and elevated to the family level by Henry Bigelow in 1913.[1] The six known species inhabit mesopelagic zone.[2] The medusae possess multiple (more than 16) lobes called lappets at the bell margin.[2] The number of tentacles and rhopalia is twice as less as the number of lappets.[2]

References

  1. ^ a b WoRMS (2011). "Atolla Haeckel, 1880". World Register of Marine Species. Retrieved January 20, 2012. 
  2. ^ a b c M. Daly, M. R. Brugler, P. Cartwright, A. G. Collins, M. N. Dawson, D. G. Fautin, S. C. France, C. S. McFadden, D. M. Opresko, E. Rodrigues, S. L. Romanos & J. L. Stakes (2007). The phylum Cnidaria: a review of phylogenetic patterns and diversity 300 years after Linnaeus (PDF). In Z.-Q. Zhang & W. A. Shear. "Linnaeus Tercentenary: Progress in Invertebrate Taxonomy". Zootaxa 1668: 127–182. 
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