Colpomenia sinuosa, the oyster thief or sinuous ballweed, is a brown alga species in the genus Colpomenia. It is the type species of its genus. It is found throughout South Africa and is widespread around Australia and overseas.
C. sinuosa contains the C6-C4-C6 phenolic compound colpol.
Clade: Chromista (Algae)
Species: Colpomenia sinuosa