Honjo's early sediment traps were large, gray cones, often deployed in pairs.
These smaller, yellow cones show the current design. Research Specialist Steve Manganini, who has been involved in some 32 sediment trap deployments in several oceans, is at center. (Susumu Honjo)
The sampling bottles rotate on a schedule programmed before the instrument is deployed, each collecting about 5 day's to a month's worth of "rain" before being sealed for analysis upon recovery of the sediment trap. At right is a diagram of an Arabian Sea mooring that included PARFLUX traps (yellow cones) for WHOI–Oregon State University joint research and traps specially designed for biochemical studies (red squares) by researchers from the State University of New York–Stony Brook, Skidaway Institute of Oceanography, and the University of Washington.