Cornish Biodiversity Network  -  Supporting Wildlife Recording

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Cornish Red Data (2009)

The descriptive text, below the map, is from the Cornish Red Data Book (2009). The map on this web page depicts the organisms distribution and shows the records made pre-2000 and those made since.

Physalia physalis - Portuguese Man O'War

Range & Status

A pelagic species which normally inhabits tropical and sub-tropical regions of the World' s oceans. Very occasionally it may be blown into Cornish waters and cast upon the shore from further south in the Atlantic. Strandings generally occur in the summer and autumn, but can occur during all months of the year, especially after prolonged periods of westerly or south-westerly winds. Elsewhere recorded from south-west Wales and Ireland as a consequence of the prevailing south-westerly winds.


I.J. Bennallick, S. Board, C.N. French, P.A. Gainey, C. Neil, R. Parslow, A. Spalding and P.E. Tompsett. eds. 2009. Red Data Book for Cornwall and the Isles of Scilly. 2nd Edition.Croceago Press.

The Cornish Red Data Book Project was led by the Cornwall and Isles of Scilly Federation for Biological Recorders (CISFBR). The full text and species accounts (minus the maps) are available on the CISFBR website.

Cornish Biodiversity Network. 2017.