Continental drift Continental drift Continental drift is the theory that the Earth's continents have moved over geologic time relative to each other, thus appearing to have "drifted" across the ocean bed. The speculation that continents might have 'drifted' was first put forward by Abraham Ortelius in 1596. The concept was independently and more fully developed by Alfred Wegener in 1912, but his theory was rejected by many for lack of any motive mechanism. Arthur Holmes later proposed mantle convection for that mechanism. The idea of continental drift has since been subsumed by the theory of plate tectonics, which explains that the continents
Drift seed annual convention in 1996, the International Sea-bean Symposium, dedicated to the display, study, and dissemination of information concerning drift seeds and other flotsam. Drift seed Drift seeds (also sea beans) and drift fruits are seeds and fruits adapted for long distance dispersal by water. Most are produced by tropical trees, and they can be found on distant beaches after drifting thousands of miles through ocean currents. This method of propagation has helped many species of plant such as the Coconut colonize and establish themselves on previously barren islands. Consequently, drift seeds and fruits are of interest to scientists who study