ALGAL REALM: A Bio-Integrated Lunar Habitat Design for Life Beyond Earth

ALGAL REALM explores this possibility through a speculative lunar habitat design centered on bioengineered algae. Rather than treating biology as a secondary support system, the proposal places algae at the heart of a closed-loop lunar ecosystem, integrating it with architecture, construction, food production, energy generation, waste management, medicine, and atmospheric control.

The project was designed by Praneeth Aashwinay, Preetham Bharadwaj, Abhijith Lakshman, and BIRYANI BOYS STUDIOS. It received the People's Choice Award in Moon Base 2124 (2020).

Rethinking Lunar Habitat Design as an Ecosystem

Conventional discussions around extraterrestrial habitation often begin with machines. Oxygen must be produced, water must be filtered, waste must be processed, food must be supplied, and power must remain available.

ALGAL REALM proposes another starting point: a biological system capable of contributing to several of these requirements simultaneously.

The central concept introduces different types of bioengineered algae grown in controlled environments on the Moon. Instead of assigning a separate mechanical device to every task, the project imagines algae performing multiple functions within a larger regenerative network.

The proposal identifies potential roles including:

• oxygen generation through carbon dioxide conversion
• edible biomass and food production
• pharmaceutical and medicinal applications
• hydrogen production
• electricity generation through biophotovoltaic processes
• human waste treatment
• radiation-responsive materials
• algae fibers for 3D-printed construction
• biological components for structural reinforcement

Architecture therefore becomes more than an enclosure. It becomes part of a productive ecological infrastructure.

The Algal Realm Ecosystem

One of the project's diagrams explains a deliberately circular relationship between sunlight, algae, humans, and machinery.

Humans release carbon dioxide. Algae use carbon dioxide and sunlight while producing oxygen and other usable outputs. Those outputs support human occupation as well as equipment, food systems, and potentially energy infrastructure.

This relationship creates the conceptual foundation for the settlement.

Instead of imagining a lunar base as a collection of independent technological components, ALGAL REALM approaches space architecture as an interconnected metabolic system.

The ambition is not to remove machinery entirely. It is to reduce total dependence on imported equipment by allowing biological processes to take over multiple supporting roles.

That distinction is important for long-term habitation. Any permanent lunar settlement would need to address not only immediate survival but also maintenance, redundancy, local production, resource efficiency, and expansion.

ALGAL REALM addresses these questions through a hybrid of biological and architectural systems.

Growing Resources on the Moon

The project's deployment strategy begins at a surprisingly small scale: algae cells.

The designers propose transporting selected algae cultures rather than shipping every finished component required for future development. Once on the Moon, these organisms could be cultivated within controlled photobioreactors using locally available resources where feasible.

The broader architectural strategy therefore shifts from transporting complete buildings toward transporting the intelligence or biological seed required to produce parts of them.

This creates a radically different model for lunar habitat design.

A settlement is no longer conceived simply as cargo delivered from Earth. It becomes something that can progressively grow and expand through local material cycles.

Such thinking aligns with a major challenge in contemporary lunar planning, where transportability, constructability, local resources, environmental protection, and long-term habitat growth remain fundamental design concerns. NASA and academic research into lunar settlements similarly examine habitat growth, radiation protection, in-situ resources, human factors, and scalable surface infrastructure.

3D-Printed Regolith Meets Algae-Based Construction

ALGAL REALM connects its biological system directly to its construction methodology.

The proposal imagines using 3D-printed regolith concrete as the primary locally derived structural material. Lunar regolith would be processed into a printable construction medium, reducing the quantity of terrestrial building material that must be transported from Earth.

Algae fibers are then proposed as reinforcement within this system.

The drawings describe a layered assembly in which regolith-based construction is combined with algae-derived fibers and photobioreactor components.

This produces an intriguing architectural hybrid: lunar geology provides mass and structure while biological material contributes additional performance.

Rather than importing a complete conventional building system, the architecture attempts to derive more of its material logic directly from the environment in which it is constructed.

Architecture as a Living Environmental Interface

Perhaps the most distinctive element of ALGAL REALM is the integration of algae photobioreactors into architectural surfaces.

The project's sections illustrate curved building envelopes associated with algae systems that receive sunlight and interact with the internal atmosphere.

Carbon dioxide generated by occupants enters the biological cycle, while oxygen is returned to the inhabited environment.

The envelope therefore starts to behave less like a passive wall and more like an environmental interface.

The drawings also explore the possibility of using algae-based systems to contribute to radiation protection.

Radiation is one of the major constraints shaping any serious Moon base architecture proposal. Rather than solving this challenge purely through thick inert barriers, ALGAL REALM investigates how living and locally fabricated systems might become part of the protective architecture.

The Mother Unit

At settlement scale, the project is organized around larger communal structures described as Mother Units.

These low, continuous forms emerge from the lunar surface and act as shared infrastructure for smaller residential pods or "nests."

The Mother Unit can accommodate collective programs including:

research laboratories, dining spaces, aerofarming, entertainment areas, gathering spaces, theaters, maintenance facilities, fitness areas, governance spaces, and other shared functions.

Rather than reproducing an Earth-like collection of disconnected buildings, the scheme organizes communal activities inside a flowing infrastructural landscape.

Residential pods rise above and around this surface, connected back into the Mother Unit.

This creates a clear architectural hierarchy: a common landscape of shared resources below and individual living environments distributed above.

Residential Nests for Lunar Living

The residential component takes the form of vertically elongated ovoid pods.

Each nest is conceived as a compact three-level home.

The lower level contains the living area. A middle zone accommodates utilities, kitchen functions, storage, leisure spaces, and sanitation. The upper level becomes the bedroom and observatory.

The form is deliberately vertical.

This is one of the project's strongest spatial ideas.

Most terrestrial housing spreads horizontally because gravity heavily influences circulation, furniture arrangement, and accessibility. The Moon, however, offers a different gravitational environment.

ALGAL REALM uses reduced lunar gravity as a design opportunity.

Instead of treating vertical movement as a limitation, the project imagines inhabitants moving more freely between stacked platforms and elevated surfaces.

Walls can become usable territories.

Storage can be lifted away from the floor.

Furniture can be mounted to vertical surfaces.

Functions can be distributed through height rather than occupying valuable floor area.

The resulting lunar habitat design responds specifically to the physical conditions of the Moon instead of reproducing familiar Earth architecture inside a pressurized shell.

Designing With Lunar Gravity

The design diagrams compare a conventional horizontally oriented interior with the tall volume of the proposed nest.

On Earth, such an arrangement might create inconvenient circulation. Under lunar gravity, the designers imagine occupants jumping between levels and reaching elevated storage or platforms with significantly less effort.

This allows relatively small footprints to contain greater usable spatial volume.

The bedroom occupies the uppermost area, where openings provide panoramic views of the lunar environment and sky.

Leisure and storage occupy intermediate platforms, while everyday living functions remain closer to the base of the pod.

The architecture effectively turns section into its primary organizing device.

Rather than asking how much floor area a lunar dwelling needs, the project asks how much habitable volume can be activated.

Compact Living Through Integrated Furniture

The nest plans reinforce this vertical strategy.

Furniture is not treated as a collection of freestanding objects placed inside a room. Instead, curved elements are integrated into walls and platforms.

Living, kitchen, leisure, sleeping, sanitation, and storage functions become part of the pod's architecture.

This approach reduces spatial redundancy while maintaining distinct programmatic zones.

The ovoid geometry also eliminates the conventional division between wall, ceiling, and roof.

The interior becomes a continuous inhabitable shell.

In a terrestrial home, the floor typically dominates spatial organization. In ALGAL REALM, the entire internal envelope becomes potentially occupiable.

Algae Bioreactor Facades

The nest detail proposes an algae bioreactor facade integrated with UV-filtering glazing.

An algae supply and filtration chamber is positioned within the lower portion of the pod, connecting the living environment with its biological infrastructure.

This is where the concept becomes particularly architectural.

The algae system is not hidden entirely within a technical plant room. It becomes part of the building envelope and therefore contributes to the visual identity of the settlement.

The facade is imagined simultaneously as skin, environmental system, biological infrastructure, and protective layer.

Such integration transforms the appearance of the habitat from an arbitrary futuristic object into an expression of its survival strategy.

A Modular Lunar Settlement

The larger master plan is designed to be modular.

Individual clusters can be configured according to different uses rather than repeating one identical base everywhere.

The drawings explore at least three major settlement types.

Living Community

The living community combines residential nests with shared facilities including aerofarming and dining, fitness and sports spaces, maintenance, and communal programs.

It functions as the principal residential environment for a permanent population.

Research Base

A research-oriented cluster reorganizes the Mother Unit around laboratories, mining and processing, technical maintenance, residential accommodation, and support infrastructure.

Here, architecture becomes closely connected with scientific and industrial activity.

Tourist Base

A separate configuration explores future lunar tourism.

Residential nests are combined with entertainment areas, galleries, dining, aerofarming, fitness and wellness programs, and other visitor facilities.

The inclusion of tourism expands the project beyond a survival-oriented outpost.

ALGAL REALM imagines the Moon as a future inhabited territory containing multiple forms of civic and economic activity.

Interconnected Nests and Shared Infrastructure

The project proposes connecting some residential pods through elevated or enclosed circulation links.

This produces clusters rather than isolated capsules.

The arrangement resembles an emerging biological colony in which individual cells connect back to a larger organism.

That visual analogy reinforces the project's ecological premise.

Large nests become landmarks within groups of smaller units, while the Mother Unit creates a continuous shared foundation below.

At master-plan scale, the system can continue to expand by adding new pods and programmatic branches.

Growth therefore occurs incrementally rather than requiring an entirely new base every time additional capacity is needed.

Architecture That Can Expand With Its Population

Long-term flexibility is crucial to the proposal.

The designers describe the system as dynamic, with greater emphasis on producing materials on the Moon rather than continuously exporting finished components from Earth.

A settlement could begin with essential facilities and later develop additional research, residential, recreational, agricultural, industrial, or tourism functions.

This modularity gives ALGAL REALM the characteristics of an evolving settlement rather than a fixed building.

The architecture is conceived as a framework capable of responding to changing populations, activities, and technologies.

From Mechanical Life Support to Biological Infrastructure

The conceptual significance of ALGAL REALM lies in its challenge to one of the most familiar images of extraterrestrial habitation.

Space settlements are often depicted as highly engineered metallic environments filled with complex machinery.

ALGAL REALM does not reject technology. Instead, it asks whether biology itself can become technology.

Algae are framed simultaneously as food producers, atmospheric processors, material resources, medical resources, energy contributors, waste-processing organisms, and architectural components.

The designers describe this approach as a way of establishing a sustainable lunar ecosystem rather than depending entirely on complex machines.

The distinction changes the role of the architect.

Designing a lunar settlement would no longer mean arranging sealed rooms around mechanical equipment. It would also involve orchestrating flows of sunlight, carbon dioxide, oxygen, biomass, nutrients, waste, water, people, and locally produced materials.

A New Language for Sustainable Space Architecture

Visually, the proposal avoids the rigid industrial aesthetic traditionally associated with space infrastructure.

The Mother Units flow across the terrain like geological formations. Ovoid residential nests emerge vertically from their surfaces. Circular launch pads appear around the settlement, while biological infrastructure is embedded within walls and roofs.

The architecture feels grown rather than assembled.

That quality reinforces the central thesis of the project: future settlements beyond Earth might benefit from behaving more like ecosystems than machines.

ALGAL REALM therefore establishes a compelling formal language for sustainable space architecture.

Its curved structures, vertical living pods, interconnected communities, algae bioreactors, and locally fabricated materials form a coherent architectural narrative rather than a collection of unrelated technologies.

ALGAL REALM and the Future of Lunar Habitat Design

ALGAL REALM is ultimately a speculative investigation into how architecture, biology, and extraterrestrial construction could converge.

Its strongest contribution is not any individual pod or building.

It is the proposition that an entire lunar settlement could be structured around regenerative relationships.

Sunlight supports algae.

Humans provide carbon dioxide and organic waste.

Algae contribute oxygen, biomass, medicine, materials, and potentially energy.

Lunar regolith contributes construction mass.

3D printing converts local resources into architecture.

Low gravity informs new forms of vertical habitation.

Mother Units distribute shared infrastructure.

Modular nests allow the settlement to grow.

Together, these elements transform the Moon base from an isolated technological outpost into an interconnected ecosystem.

For future lunar habitat design, this shift could be fundamental. The challenge is not simply how humans might survive on another world, but how architecture could create the conditions for an increasingly autonomous society to live, grow, manufacture, research, socialize, and adapt there.

ALGAL REALM responds with a provocative answer: perhaps the future of architecture beyond Earth will not only be built.

Perhaps part of it will be grown.