Sound Knowledge and the Liminal explores liminality as a key feature of life in the Anthropocene. Drawing on 6-month research conducted in Mājro, Marshall Islands, it not only contextualises existing continental literature on liminality with a Pacific-centred perspective but also proposes that sound functions as a principal pathway for understanding wellbeing in one of Micronesia’s most resilient and vibrant urban centres. Locating everyday life in Mājro as constantly shifting between the qualities of continental city and coral atoll, the book traces how the local community uses sound to gain wellbeing in liminal spaces. Synthesising theories on Anthropocene islands, sound knowledge, vibratory labour and the auditory bubble, it highlights ludic appropriation and sonic cocoons as central to the affordances of an urbanised atoll space. Providing a though-provoking discussion of liminality outside of the context of continental cities, this book will be a vital reading for anyone for studying the relationships between Oceanic lives, sound and liminality. Especially relevant for scholars, it is also suitable for students and researchers in fields such as sound studies, cultural studies, political ecology, and Pacific studies.