During the last few years several persons have been paying attention to the animals transported by floating objects (e.g. bunches of weeds and hydroids, corks, mines, floats, etc.). A careful examination of recent finds increased the list of species known of nearly all groups of marine animals, found washed ashore on the Dutch coast, and gave a good notion of the origin of passively transported floating objects on our shores. The present authors, agreeing with IJzerman (1937), Kaas & Ten Broek (1939), Bloklander & Brouwer (1946—’47). Lucas (1950) and several others, in most cases look upon the Channel, the coast of Normandy and the South coast of England as their places of origin.