A bongo net consists of two plankton nets mounted next to each other. These plankton nets are ring nets with a small mesh width and a long funnel shape. Both nets are enclosed by a cod-end that is used for collecting plankton. The bongo net is pulled horizontally through the water column by a research vessel.Using a bongo net, a scientist can work with two different mesh widths simultaneously. Because of the Bongo’s simple design and rugged construction, the unit is almost maintenance free.