Drawing on a posthuman lens we walk -- with Deborah Bird Rose and her conceptual framing of "shimmer." We explore shimmering as incorporating a sensorial richness, as beauty and grandeur, as constantly in flux, moving between past, future and back again. Shimmering has potentiality in a posthuman context in its encompassing of spiritual and ancestral energies and illumination of the human (settler) story of exceptionalism. By theorising shimmer with this posthuman lens, we acknowledge and honour the eco-ethico consciousness raised by Australian ecophilosophers and ecofeminists such as Deborah Bird Rose and Val Plumwood, and the social ecologists who have continued to walk with them. In order to disrupt anthropocentricism and present a moral wake-up call that glows from dull to brilliance in these precarious times, we bring to environmental education the potential of holding the shimmering past tracings of theory along with us on our journeys.