Atlas Aquæ continues OMNE’s research into nature while exploring the language and possibilities of contemporary photographic publishing. Following Index Naturae and Index Naturae. Revisited (Skinnerboox, 2023–24), this volume investigates water through images drawn from 68 photobooks published between 2018 and 2025. Conceived as a laboratory of visual narratives, it examines water’s forms, states, and meanings across natural, cultural, and symbolic dimensions. Structured as a “book of books,” it preserves individual voices within a collective framework. Inspired by the atlas tradition, the volume creates a dynamic flow that invites reflection on environmental, political, and poetic perspectives surrounding water today.