Seagrass meadows are vital coastal ecosystems that provide essential services. However, this habitat is declining globally. These losses have underscored the need for restoration strategies. Tropical seagrass restoration approaches have emphasised transplanting plant fragments, as most species have low seed germination rates. Marine megaherbivores have been shown to enhance seed germination after passage through their gut. However, the underlying cause remains unknown. This study examined the impacts of using natural nutrient enrichment to improve germination outcomes by adding marine megaherbivore faeces. The aim was to determine whether the faeces' high nutrient content could boost germination rates for Zostera muelleri seeds. We conducted a germination study with seeds removed from the plant, half exposed to marine megaherbivore faeces for seven days in the dark, simulating passage through the herbivore's gut. We also compared the levels of nitrogen and phosphorous in the faeces to sediment in seagrass meadows. Seeds exposed to the faeces exhibited a significantly higher germination rate; however, prolonged exposure times greatly decreased seed viability. The findings highlight the potential of marine megaherbivore faeces to enhance seagrass seed germination. Our results present promising prospects for future seagrass restoration initiatives, suggesting that treatment with faeces may improve success in seagrass restoration.