Both Richard Sylvan’s trenchant critique of Deep Ecology and Warwick Fox’s illuminating reinterpretation and defence are presented and appraised. Besides throwing light on the nature and the prospects of the defence of Deep Ecology and of its diverse axiological, epistemological and metaphysical strands, the appraisal discloses the range of normative positions open to those who reject anthropocentrism, of which Deep Ecology is no more than one (and, if Fox’s account of its nature is right, may not be one at all). (...) A position intermediate between Deep Ecology and anthropocentrism is advocated, which has been called by Wayne Sumner "middle-depth environmentalism – a kind of continental shelf between the shallow and deep extremes". (shrink)