Sea turtle egg fusariosis is caused by two fungal pathogens, Fusarium keratoplasticum and Fusarium falciforme. These fungi are associated with high egg mortality in sea turtle nests worldwide. Sampling from sea turtle nests, I aim to unravel the ecology and epidemiology of these fusaria. This research will inform on the threat these fungi pose to sea turtle populations, and best management practices to prevent and/or control future outbreaks.