Spatial variability of the seabed in littoral regions is driven by processes that span a large range of space and time scales, ranging from eustatic fluctuations which are more or less global in extent but can have a profound effect on sedimentary layering from hundreds of meters to sub-meter scales, to biologic reworking which might be very local and affect only the upper few tens of centimeters. These processes (as well as many others) conspire to create a rich variety of sediment property distributions both in vertical and horizontal dimensions. One way to probe the spatial variability is with wide-angle reflection measurements. Here we discuss results from the Clutter09 experiment in which seabed reflection measurements were conducted using a broadband source (800–3500 Hz) and a 32 element towed horizontal receiver. The results are compared with previous observations using a single hydrophone and a Uniboomer. [Work supported by the Office of Naval Research OA321 and the NATO Undersea Research Centre.]