Galapagos Species Database

The Galapagos Species Database shares the information about the species from our Natural History Collections.

Obelia oxydentata Stechow, 1914

Hidrozoo, Hydrozoa

Taxonomy

Domain
Eukaryota

Kingdom
Animalia

Phylum
Cnidaria

Class
Hydrozoa

Order
Leptothecata

Suborder
Proboscoida

Family
Campanulariidae

Genus
Obelia

Species
oxydentata

Taxon category: Accepted

Origin: Introduced - established

Introduction

Year of first record: 2016

Mode of introduction: Accidental

Introduction Pathway: Stowaway

Subpathway: Ship hull

Introduced status: Naturalized

Invasive status: Under watch

Distribution

Distribution: Tropical Eastern Pacific: Panama and the Galapagos Islands in San Cristobal (Calder et al., 2021).

References

  • Calder, D.R. Carlton, J. T., Keith, I., Larson, K., McCann, L., Geller, J., Wheelock, M., Choong, H. H. C., & Ruiz, G. M. (2021) Additions to the hydroids (Cnidaria, hydrozoa) of marine fouling communities on the mainland of ecuador and in the galapagos islands Aquatic Invasions, 16(2), 208–252. https://doi.org/10.3391/ai.2021.16.2.02
  • Calder, D.R. Carlton, J. T., Larson, K., Mallinson, J. J., Choong, H. H. C., Keith, I., & Ruiz, G. M (2019) Hydroids (Cnidaria, Hydrozoa) from marine fouling assemblages in the Galápagos Islands, Ecuador Aquatic Invasions (2019) Volume 14, Issue 1: 21–58
  • Carlton, J. T. Keith, I., & Ruiz, G. M. (2019) Assessing marine bioinvasions in the Galápagos islands: Implications for conservation biology and marine protected areas. Aquatic Invasions, 14(1), 1–20. https://doi.org/10.3391/ai.2019.14.1.01
  • Horton, T. Horton, T., Kroh, A., Ahyong, S., Bailly, N., Boyko, C. B., Brandão, S. N., Gofas, S., Hooper, J. N. A., Hernandez, F., Holovachov, O., Mees, J., Molodtsova, T. N., Paulay, G., Decock, W., Dekeyzer, S., Poffyn, G., Vandepitte, L., Vanhoorne, B., Adlard, R., ... Zhao, Z. (2021) World Register of Marine Species. Available from https://www.marinespecies.org at VLIZ.

You are welcome to download and use the information found in this page, acknowledging its source.

This page should be cited as follows:

"Galapagos Species Database, Obelia oxydentata", dataZone. Charles Darwin Foundation, https://datazone.darwinfoundation.org/en/checklist/?species=18864. Accessed 31 October 2026.