A pontoon includes a generally elongated shell made of at least two shell segments assembled in an end-to-end configuration. In an SRAM comprising a plurality of memory cells each constructed by a storage in which input and output terminals of two inverter circuits are cross-connected and a selection MOSFET provided between the storage and complementary bit lines and whose gate is connected to a word line, a substrate bias switching circuit is provided. When disconnected, the upper section may be used as a handbag. This makes it possible for the person to detachably attach the holding members to the support member without using tools; hence, it is possible to improve the handling of the snare strainer. The second jaw is locked in the second position in response to movement of the plurality of components to the tightened configuration. The amount of data in a media stream itself may be selectively reduced and, the amount of data in the media stream may be selected for delivery andor storage so that it is reduced in a manageable and consistent fashion.