There is something about a geometric pattern that is intrinsically pleasing to the human eye. Finding pattern in whatever we are looking at often stirs the senses, perhaps because it promotes a feeling of comprehension, or perhaps simply because we find the pattern aesthetically pleasing. Patterns are all around us, from simple geometric lines to more complex forms both in the natural and man-made world. Acoustic imagery of the seabed has given us the opportunity to reveal many familiar and some less familiar patterns, previously hidden from view by the overlying water. Formed by a multitude of processes, including ice and water movement, this collection includes images that are reminiscent of geometric shapes or patterns.