Bernice Puahi Bishop Museum · CC BY-NC · GBIF · full resolution
Halimeda opuntia
watercress alga
As recorded: Halimeda opuntia (L.) J.V.Lamour.
Plantae › Chlorophyta › Ulvophyceae › Bryopsidales › Halimedaceae
- Collected by
- Dawson, E.Y.
- Collector number
- 13700
- Date
- August 21, 1955
- Locality
- Enewetak Atoll
- Island
- Enewetak Atoll
- Region
- Marshall Islands
- Record type
- Preserved specimen
Collected the same day
On August 21, 1955, Dawson, E.Y. also collected 24+ other specimens.
Anotrichium tenue
Botany
Anotrichium tenue
Botany
Antithamnion
Botany
Antithamnion antillanum
Botany
Antithamnionella breviramosa
Botany
Antithamnionella breviramosa
Botany
Asparagopsis
Botany
Bryopsis pennata
Botany
Callithamnion marshallense
Botany
Callithamnion marshallense
Botany
Callithamnion marshallense
Botany
Calothrix crustacea
Botany
Cladophora socialis
Botany
Dictyota divaricata
Botany
Dipterosiphonia rigens
Botany
Gayliella flaccida
Botany
Halimeda monile
Botany
Heterosiphonia crispella
Botany
Hormothamnion enteromorphoides
Botany
Hydrocoleum
Botany
Hypnea musciformis
Botany
Hypoglossum
Botany
Jania capillacea
Botany
Lomentaria hakodatensis
Botany
Halimeda opuntia observed alive
This specimen was collected in 1955. Since 2000, iNaturalist observers have recorded 25 research-grade sightings in the wild, most recently on 2026-04-27.
2026-04-27
Curaçao
(c) emmaalves, some rights reserved (CC BY-NC)
2025-05-07
Pigeon Island, Sri Lanka
(c) Linda, some rights reserved (CC BY-NC)
2025-05-03
(c) Sue, some rights reserved (CC BY-NC)
2024-12-29
El Qoseir, Red Sea Governorate, Egypte
(c) Marleen Schouten, some rights reserved (CC BY-NC)
2024-01-03
Fisherman's Rock, North Sound, Grand Cayman
(c) spirula, some rights reserved (CC BY-NC)
2023-09-13
Bonaire, Lac Bay, Caribbean Netherlands
(c) Jay Brasher, some rights reserved (CC BY)
Observations and photos from iNaturalist, shown only when openly licensed.
Cite this specimen
Halimeda opuntia. BISH 497941. Bernice Pauahi Bishop Museum, Honolulu. GBIF occurrence 5956528178. Accessed via explore.bishopmuseum.org/specimens/bish/497941.
Record sources
- GBIF occurrence 5956528178 ↗
- Data license: CC_BY_NC_4_0
- Last harvested October 26, 2026