Lockyear J. F., Hecht T., Kaiser H. & Teske P. R. (2010) The distribution and abundance of the endangered Knysna seahorse Hippocampus capensis (Pisces: Syngnathidae) in South African estuaries African Journal of Aquatic Science 31: 275–283

Keywords: Freshwater floods, keurbooms estuary, knysna estuary, swartvlei estuary, patchy distribution, population size fluctuation, submerged vegetation