Amphibious Rituals: Reclaiming Tides at Mazzorbetto reimagines a forgotten island of the Venetian Lagoon as a living threshold between land and sea. The project restores lost salt marsh through floating soft infrastructures, sediment rituals, and community-led craft, creating habitats resilient to sea-level rise. Eight interwoven zones, from tidal pools to floating reed mats to a fort transformed into an art residency to a bridge of boats linking Mazzorbo and Mazzorbetto, form a landscape of renewal. Guided by La Custode ( the guardian of Mazzorbetto), a mythic spirit of sediment and tide, visitors are invited into acts of care: offering clay, weaving reeds, walking upon boat bridges, and gathering in salt-wind festivals. Ecological restoration merges with cultural memory, generating an amphibious cartography that is both poetic and pragmatic. The design demonstrates how ritual, community, and adaptive infrastructures can converge to safeguard fragile lagoon ecologies while re-embedding human presence within cycles of water, sediment, and time.