About 10 years ago, the use of sediment traps to measure oceanic particle fluxes and composition began to proliferate (Honjo, 1978; Rowe and Gardner, 1979: Knauer et al., 1979: Honjo, 1980: Deuser et al.. 1981). This technique has now become widespread. Research on particle composition and flux using sediment-trap and other large-particle sampling technologies has clearly shown the importance of particulate matter in global biogeochemical cycles. It has become a major goal within the oceanographic community to understand the processes controlling particle production, transport and destruction on both small and large scales (National Academy of Sciences, 1984; Alldredge and Hartwig, 1986). Particularly important to these studies is an accurate estimate of particle production and flux in surface waters.