SeaCities is a research and design lab at Griffith University’s Gold Coast campus focused on aquatic urbanism and climate adaptation for coastal cities, described as a world-first, highly interdisciplinary initiative within the Cities Research Institute and linked to the Blue Economy CRC. Founded in 2019 by Prof. Joerg Baumeister, the lab brings together architecture, engineering, urban planning, marine science and related fields to develop water-adapted urban solutions and floating structures. It delivers design-engineering services for coastal and marine environments and translates its research into books and applied projects, including the Springer titles SeaCities: Urban Tactics for Sea-Level Rise (2021), SeaCities: Aquatic Urbanism (2023), and Cities+1m (2022–23), alongside prototypes such as SeaOasis for food security, SeaFisher for offshore aquaculture, SeaWatt 1000 floating wind and energy islands, SeaManta artificial reef and hospitality platform, SeaSurveyor bases for monitoring marine protected areas, SeaPort floating container hubs, and the Cities+1m manual outlining combined strategies for a +1 m sea-level rise.