Dromalia

Dromalia alexandri
Scientific classification
Kingdom:	Animalia
Phylum:	Cnidaria
Class:	Hydrozoa
Order:	Siphonophorae
Family:	Rhodaliidae
Genus:	Dromalia
Species:	D. alexandri
Binomial name
	Dromalia alexandri; Bigelow, 1911

Dromalia is a monotypic genus of rhodaliid siphonophore, containing the single species Dromalia alexandri. It is one of several siphonophores commonly referred to as deep-sea dandelions.

Description

D. alexandri is characterized by a distinctive pneumatophore compared to other rhodaliids. The pneumatophore has a flattened shape with several processes extending from its rim. Its walls are also notably thick and rigid compared to other genera.

Its zooids have a salmon pink or orange colour.^{[citation needed]}

Distribution

Specimens of D. alexandri have been collected in the Pacific ocean at depths ranging from 100 to 800 meters (330 to 2,620 ft).

References

↑ Bigelow H.B. (1911c). The Siphonophorae. Reports of the scientific research expedition to the tropical Pacific. Albatross XXIII. Memoirs of the Museum of Comparative Zoology at Harvard College. 38: 173-401, 32 pls., available online at http://www.biodiversitylibrary.org/item/32451 page(s): 303
↑ Schuchert, P.; Choong, H.; Galea, H.; Hoeksema, B.; Lindsay, D.; Manko, M.; Pica, D. (2026). "World Hydrozoa Database. Dromalia alexandri Bigelow, 1911". WoRMS. World Register of Marine Species. Retrieved 7 April 2026.{{cite web}}: CS1 maint: multiple names: authors list (link)
1 2 P. R. Pugh; Benthic siphonophores: a review of the family Rhodaliidae (Siphonophora, Physonectae). Philos Trans R Soc Lond B Biol Sci 14 June 1983; 301 (1105): 165–300. https://doi.org/10.1098/rstb.1983.0025

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[1] Bigelow H.B. (1911c). The Siphonophorae. Reports of the scientific research expedition to the tropical Pacific. Albatross XXIII. Memoirs of the Museum of Comparative Zoology at Harvard College. 38: 173-401, 32 pls., available online at http://www.biodiversitylibrary.org/item/32451 page(s): 303

[worms-2] Schuchert, P.; Choong, H.; Galea, H.; Hoeksema, B.; Lindsay, D.; Manko, M.; Pica, D. (2026). "World Hydrozoa Database. Dromalia alexandri Bigelow, 1911". WoRMS. World Register of Marine Species. Retrieved 7 April 2026.{{cite web}}: CS1 maint: multiple names: authors list (link)

[Pugh-3] 1 2 P. R. Pugh; Benthic siphonophores: a review of the family Rhodaliidae (Siphonophora, Physonectae). Philos Trans R Soc Lond B Biol Sci 14 June 1983; 301 (1105): 165–300. https://doi.org/10.1098/rstb.1983.0025