Getting wet and muddy was a childhood trait that Brian Moss never quite grew out of. His research and teaching have embraced freshwaters on five continents over fifty years, a range of approaches from field survey to laboratory and whole-lake experiments and a gamut of sites from lakes in Malawi, Tanzania and Michigan, to thermal streams in Iceland, the Norfolk Broads, the North-West Midland Meres and temperature-controlled ponds at the University of Liverpools Botanic Gardens. When he retired from Liverpool as Professor of Botany in 2008, he was spending at least as much time with invertebrates and fish as with plants and algae. His work has been widely published, with a textbook on Ecology of Freshwaters, soon to appear in its fifth edition, books in the New Naturalist series on The Broads and Lakes, Loughs and Lochs, and a manual on lake restoration. He has been President of the International Society for Limnology and Vice-President of the British Ecological Society. He was awarded the Institute of Ecology and Environmental Managements annual medal for his lifes work and leadership in shallow-lake research in 2010, and the Ecology Institutes Excellence in Ecology prize in 2009. This entailed the writing of a book, Liberation Ecology, which interprets ecology for the general public through the media of the fine arts. The book won the Marsh Prize, in 2013, for the best ecology book published in the previous year. Brian loves teaching, plays the double bass (not very well), writes satirical doggerel, often directed at officialdom, and is exercised daily by a large dog.