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 these currents.
In botanical terminology, a drift fruit is a kind of diaspore, and drift seeds and fruits are disseminules.
Enthusiasts founded an annual convention in 1996, the International Sea-bean Symposium, dedicated to the display, study, and dissemination of information concerning drift seeds and other flotsam.[3]
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