Cloaked Colonization: A Mobile Underwater Habitat That Moves Like a Fish
Micah Abaya's shortlisted EHC Pacific entry reimagines ocean settlement as a dispersed network of self-sustaining architectural organisms.
What if architecture could swim? Cloaked Colonization starts from the premise that underwater human settlement should not mimic the fixed permanence of land-based cities. Instead, the project proposes habitat units with a fish-like horizontal profile, designed to travel through ocean currents rather than resist them. The result is a speculative architecture that behaves less like a building and more like an organism inhabiting an ecosystem, relocating when conditions demand it and integrating into the biological rhythms of the sea.
Designed by Micah Abaya, the project was shortlisted in the EHC - Pacific competition. It challenges the dominant image of underwater colonization as an enormous sealed dome separating humans from nature, replacing it with a dispersed network of smaller, mobile, self-sustaining units that occupy the ocean alongside existing marine ecosystems.
Architecture Without a Fixed Address


Mobility is the conceptual engine of the entire project. On land, foundations anchor buildings to a single geographic location. Cloaked Colonization abandons that contract entirely. The habitat units are conceived as lightweight, adaptable structures whose geometry draws from the movement of marine life through water. Their fish-like profile is not decorative; it is functional, intended to support smoother passage through currents rather than bracing against them.
The clustered translucent volumes and linked modular configurations visible in the early renderings suggest a settlement logic that is incremental and flexible. Habitat units can potentially relocate to access resources, connect with other units, avoid environmental hazards, or move toward safer underwater conditions. The site itself becomes variable. Architecture and geography are no longer locked together.
Cloaked in Ecology, Not Hidden From It

The word "cloaked" in the project title is worth pausing on. It does not mean invisible. It means absorbed. The project imagery places habitat units between geological formations, across underwater surfaces, and within dramatic seabed terrain where rock valleys, coral, aquatic plants, and schools of fish already occupy the landscape. Human habitation is positioned within a much larger ecological system rather than sealed off from it.
The aerial view of the lobed structure with planted roof edges and figures silhouetted against a volcanic landscape reinforces this reading. Architecture here attempts to become part of the textures and biological processes of its surroundings. A larger settlement could develop gradually, unit by unit, rather than through the construction of a single monumental structure. The dispersal is the strategy.
The Membrane as Interface

Self-sufficiency is not an afterthought in this proposal; it is embedded in the skin of the building. Abaya imagines the outer membrane of each habitat unit as more than a protective shell. It is an interface between human habitation and the surrounding ocean. Marine organisms, including plankton, are envisioned interacting with or attaching to parts of the unit, contributing to a speculative energy-harvesting strategy where biological activity on the envelope performs environmental work.
The underwater interior rendering captures this threshold condition powerfully. Textured concrete walls and an arched opening frame a view directly into a coral reef, with tropical fish swimming just above. There is no glass curtain wall, no dramatic technological barrier. The architecture meets the ocean at a porous edge, suggesting an interior life shaped by constant proximity to marine biology. The envelope performs several roles simultaneously: enclosure, energy collection, ecological engagement.
Why This Project Matters
Underwater architecture competitions tend to produce two kinds of proposals: heroic engineering megastructures or soft ecological fantasies with no spatial specificity. Cloaked Colonization occupies a more interesting middle ground. It commits to a clear organizational logic (dispersed, mobile, membrane-driven) and illustrates that logic through renderings that show real spatial relationships between habitation and marine environment. The fish-like profile, the biological envelope, the incremental settlement pattern: each decision follows from the core commitment to mobility and integration.
What makes Abaya's work compelling is the refusal to treat the ocean as a blank site to be conquered. The project takes seriously the idea that any architecture placed underwater must negotiate with an existing, functioning ecosystem. Settlement becomes cohabitation. The building envelope becomes a living interface. And the permanence that architecture typically promises is replaced by something far more adaptive: the ability to leave.
View the Full Project
About the Designers
Designer: Micah Abaya
Enter a Design Competition on uni.xyz
uni.xyz runs architecture and design competitions year-round that reward proposals with spatial conviction and real site intelligence.
Project credits: Cloaked Colonization by Micah Abaya EHC - Pacific (uni.xyz).
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