Interactions between biological and physical processes operate at a number of different spatial and temporal scales, from the relationship between productivity and microscale turbulence, to the link between life-cycles and decadal, basin-scale gyres. At larger scales, our understanding of biological phenomena are becoming better understood e.g. the mechanisms underlying coastal upwelling systems, their connection in turn to large climate signals such as ENSO and NAO,  biologically important tidal fronts. At the other end of the spectrum, there have been important advances in our ability to make continuous fine scale biological measurements through automated sensors that obtain biological data with a coverage and resolution comparable with the best physical data. Between these extremes, our knowledge of how physical processes influence biological patterns and processes has increased rapidly during the last decade. This session invites papers investigating the links between biological and physical processes acting at different scales, either experimentally, observationally or through modelling. We welcome contributions from both the benthic and pelagic realms.