The marine fungi colonizing drift wood collected in sand dunes are listed and compared with those which grew on blocks of beech (Fagus sylvatica L.) and Scots pine (Pinus sylvestris L.) submerged in the sea at eight test sites. Fungi were isolated from sand by direct plating out onto agar plates, and baiting the sand with strips of balsa wood (Ochroma lagopus). Marine ascomycetes were recovered with the wood baiting technique while the plating out procedure favoured the recovery of Fungi Imperfecti. The significance of these observations with respect to the study of the ecology of sand dune fungi is discussed.