Rivers, wetlands and other salt and freshwater ecosystems feature in the 23rd Biennale of Sydney (2022), titled rīvus, as dynamic living systems with varying degrees of political agency. Indigenous knowledges have long understood non-human entities as living ancestral beings with a right to life that must be protected. But only recently have animals, plants, mountains and bodies of water been granted legal personhood. rīvus invites several aqueous beings into a dialogue with artists, architects, designers, scientists, and communities, entangling multiple voices and other modes of communication.