Feral ungulates (hooved animals) cause enormous damage to wetlands across Australia, resulting in increased greenhouse gas emissions, losses of biodiversity, diminished cultural values, and threats to biosecurity. Through cross-cultural and interdisciplinary collaboration, we are developing a new carbon abatement method for the Australian Carbon Credit Unit Scheme that would award a carbon credit for reduced emissions arising from managing feral ungulates in both freshwater and saline wetlands. We will present a draft of the ACCU Scheme method, including estimates of abatement based on empirical data and modelling, and outline the process and challenges associated with carbon market method development in the marine and coastal space. We will also outline opportunities for linkages between the wetland methods of the ACCU Scheme, and new methods we are currently developing for the Nature Repair Market.