This specimen has not been photographed yet.
Hydroclathrus clathratus
As recorded: Hydroclathrus clathratus (C.Agardh) M.Howe
Chromista › Ochrophyta › Phaeophyceae › Scytosiphonales › Scytosiphonaceae
- Collected by
- Okano, R.
- Collector number
- IA 24506
- Date
- May 9, 2000
- Locality
- Hanauma Bay
- Island
- Oʻahu
- Region
- Hawaii, United States
- Identified by
- Magruder, W.H.
- Record type
- Preserved specimen
Collected the same day
On May 9, 2000, Okano, R. also collected 24+ other specimens.
Hydroclathrus clathratus observed alive in Hawaiʻi
This specimen was collected in 2000. Since 2000, iNaturalist observers have recorded 47 research-grade sightings in the wild, most recently on 2025-08-25.

2025-08-25
Honolulu, HI, USA
(c) Daniel Ward, some rights reserved (CC BY-NC)

2025-07-17
Hawaii County, HI, USA
(c) Anuschka Faucci, some rights reserved (CC BY-NC)

2025-06-25
North Pacific Ocean, Kahuku, HI, US
(c) dude_mala, some rights reserved (CC BY-NC)

2025-05-28
Napili, Maui, Hawai'i, USA
(c) sea-kangaroo, some rights reserved (CC BY-NC-ND)

2025-03-14
Waialae - Kahala, Honolulu, HI, USA
(c) catta, some rights reserved (CC BY-NC)

2025-02-01
Mamala Bay, Honolulu, HI, US
(c) aalanis21, some rights reserved (CC BY-NC)
Observations and photos from iNaturalist, shown only when openly licensed.
Cite this specimen
Hydroclathrus clathratus. BISH 515299. Bernice Pauahi Bishop Museum, Honolulu. GBIF occurrence 5956259247. Accessed via explore.bishopmuseum.org/specimens/bish/515299.
Record sources
- GBIF occurrence 5956259247 ↗
- Data license: CC_BY_NC_4_0
- Last harvested October 26, 2026
