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Service Notice

The Western Australian Herbarium’s collections management system, WAHerb, and DBCA’s flora taxonomic names application, WACensus, have been set to read-only mode since 1 October 2025. Recent taxonomic changes are not currently being reflected in Florabase, herbarium collections, or the census. The project team is now conducting testing of the migrated data, and a further update will be provided by the end of the financial year (1 July). Please reach out to us if you have any questions or concerns.

The notice period started at 9:45 am on Friday, 12 December 2025 +08:00 and will end at 12:00 pm on Saturday, 2 May 2026 +08:00.

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Halophila ovalis (R.Br.) Hook.f.
Sea Wrack

Reference
Bot.Antarct.Voy.III.(Fl.Tasman.) 2:45 (1858)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Rhizomatous, dioecious, submerged, marine or estuarine perennial, herb. Fl. Aug to Dec or Jan to Apr. White sand, mud. Tidal pools, reefs and inter-tidal areas.

Grazyna Paczkowska, Descriptive Catalogue, 9 August 1994
Image

Distribution

IBRA Regions
Carnarvon, Dampierland, Northern Kimberley, Pilbara, Swan Coastal Plain, Yalgoo.
IBRA Subregions
Cape Range, Edel, Mitchell, Perth, Pindanland, Roebourne.
IMCRA Regions
Abrolhos Islands, Canning, Central West Coast, Kimberley, Leeuwin-Naturaliste, Ningaloo, Pilbara (nearshore), Pilbara (offshore), Shark Bay, WA South Coast, Zuytdorp.
Local Government Areas (LGAs)
Ashburton, Broome, Carnarvon, Cockburn, Derby-West Kimberley, Esperance, Exmouth, Greater Geraldton, Irwin, Karratha, Peppermint Grove, Rockingham, Shark Bay, Wyndham-East Kimberley.