
Obelia dichotoma
Sea Thread Hydroid
As recorded: Obelia dichotoma (Linnaeus, 1758)
Animalia › Cnidaria › Hydrozoa › Leptothecata › Campanulariidae
- Collected by
- T. Gosliner
- Locality
- Kaneohe Bay
- Island
- Oʻahu
- Region
- United States
- Depth
- 1 m
- Identified by
- B. Cooke
- Record type
- Preserved specimen
Obelia dichotoma observed alive
Since 2000, iNaturalist observers have recorded 27 research-grade sightings in the wild, most recently on 2025-12-09.

2025-12-09
Australia
(c) Kelly Forbes, some rights reserved (CC BY-NC)

2025-09-29
1483 Alaskan Way Pier 59, Seattle, WA 98101, USA
(c) Eric Running, some rights reserved (CC BY-NC)

2025-05-05
Oak Bay, BC, CA
(c) Liam Ragan, some rights reserved (CC BY-NC)

2024-08-02
Port Mouton, Queens, NS, CA
(c) Hunter Stevens, some rights reserved (CC BY-NC)

2024-05-06
Strathcona, BC, Canada
(c) Hakai Institute, some rights reserved (CC BY-NC-SA)

2023-11-26
whittle rock false bay
(c) Georgina Jones, some rights reserved (CC BY-SA)
Observations and photos from iNaturalist, shown only when openly licensed.
Cite this specimen
Obelia dichotoma. BPBM 458. Bernice Pauahi Bishop Museum, Honolulu. GBIF occurrence 37715599. Accessed via explore.bishopmuseum.org/specimens/d/458.
Record sources
- GBIF occurrence 37715599 ↗
- Data license: CC0
- Last harvested October 26, 2026
