Reef Rocket:

Restoring oyster reefs in New York City and worldwide is crucial for reducing the impact of coastal natural disasters. These reefs play a vital role in dissipating wave energy, mitigating storm surges, controlling erosion, improving water quality, and fostering biodiversity. Globally, oyster populations have declined by more than 85%. Studies show that reefs can reduce the power and energy of waves by as much as 76-93%, resulting in significant cost savings. With an estimated $1.8 billion in averted damages to property and economic activities as well as an economic value of $3.4 billion, the installation of permanent reef structures along coastlines is essential to restore oyster populations and their ecological services. Our solution embraces clean technology and nature-based strategies to develop resilient do-it-yourself coastal infrastructure, effectively mitigating flood risks, safeguarding and engaging vulnerable communities, and minimizing economic losses.

The New York Harbor was once the site of one of the planet's greatest and most biodiverse marine ecosystems. By restoring nature's defense system, modular reef structures play a critical role in restoring key, self-regulating mechanisms, including:

1. Wave Energy Dissipation: Oyster reefs act as natural barriers that break and absorb wave energy during storms and high tides. They act as a buffer, reducing the intensity of waves reaching the shoreline. This wave energy dissipation helps protect coastal areas from erosion, reducing the risk of flooding and property damage.

2. Storm Surge Mitigation: Oyster reefs have the ability to attenuate storm surge impacts. By absorbing and slowing down the movement of water, these reefs help reduce the height and force of storm surges, thereby lowering the risk of coastal flooding and the associated damages.

3. Erosion Control: Oyster reefs provide stabilization to shorelines by reducing erosion. They trap sediments and promote the deposition of new sediment, which helps build up and maintain beaches and coastal landforms. This erosion control function strengthens the resilience of coastal areas against natural hazards.

4. Water Quality Improvement: Oysters are filter feeders, meaning they extract particles and pollutants from the water as they feed. By restoring oyster populations, water quality can be improved as they help filter excess nutrients, sediments, and contaminants. In fact, one oyster can filter up to 50 gallons of water a day! Cleaner water reduces the impacts of algal blooms, enhances habitat quality for marine life, and contributes to overall ecosystem health. In New York City, this service aids in recovery after storms due to our out-dated sewage overflow system, which releases polluted urban runoff and raw sewage into our waterways.

5. Habitat Creation and Biodiversity Enhancement: Oyster reefs provide essential habitat for numerous marine species. By restoring these reefs, we enhance biodiversity and create a thriving ecosystem. A diverse and healthy ecosystem is more resilient to disturbances and can better withstand the impacts of natural disasters.

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By engaging frontline communities in restoring their local ecology, Reef Rocket offers a self-regulating solution that grows over time, keeping pace with climate change. Our Nature-as-Resilient-Infrastructure approach stands in stark contrast to current "grey" manmade infrastructures, including breakwaters and seawalls, which necessitate maintenance and repair while providing short-term protection at a substantial environmental and economic cost. The cumulative cost of repairing gray infrastructure due to extreme weather events is estimated to reach $4.6 trillion by 2025, with an estimated funding gap of $2.1 trillion.

Furthermore, "grey" infrastructures rely on industrial cement due to its durability in extreme environments. Looking towards the future, we need material like cement, that can withstand natural disasters, without its hefty environmental footprint. Our solution contributes to reframing climate resilience, leading us towards a climate era where our lives, environments, and ecosystems are integrated. We achieve this by utilizing ecology to regulate and adapt to extreme climates, while decarbonizing cement production through the DIY fabrication of biocement for coastal restoration initiatives.

Our solution utilizes our novel technology to enable local manufacturing: growing cements that mimic the natural process by which shells and corals form. By harnessing this natural process, we can grow a material akin to conventional cement using locally sourced, plant-based proteins in just 9 days. This resulting material shares the same chemical composition as the substance oysters and corals produce to grow their reefs over millennia: making it the ideal medium for marine regeneration. The process is non-toxic, energy-efficient, and environmentally friendly, rendering it highly suitable for the fabrication of water-resilient coastal structures by non-experts. Furthermore, the plant-based proteins utilized in the growth of our biocement are derived from a nitrogen-fixing crop that can be cultivated on a global scale, facilitating the local and global expansion of biocement production for restoration efforts.

From the deployment of structures such as decommissioned school buses and subway trains, to DIY installations utilizing old tires and cement blocks, durable structures are being submerged as artificial reefs. In New York Harbor, the Billion Oyster Project is restoring oyster reefs by utilizing three leading solutions: plastic mesh bags with shells, gabions—metal cages filled with shells—and cement reef structures, which are being installed at a community and municipal level. These materials present a dilemma.

Conventional materials like metal, plastic, and cement degrade in extreme climates, releasing pollutants into marine ecosystems. Their fossil-fuel-intensive production amplifies greenhouse gas emissions, exacerbating the climate crisis. Notably, industrial cement, the most popular restoration material due to its accessibility and durability, represents an estimated 8% of global greenhouse gas emissions.

Restoring reef ecosystems to coastlines requires a significant material threshold. In New York Harbor, this is estimated to account for 70 billion tons of carbon dioxide emissions, representing unprecedented emissions double that of annual emissions from all human activities combined, thereby exacerbating climate change impacts. Our solution enables critical, durable materials to be produced while eliminating its energy production and carbon footprint.

Developing accessible, environmentally-friendly, and carbon-neutral material for restoration and coastline protection is crucial to scaling resiliency efforts; enhancing the long-term efficacy of artificial reefs in mitigating coral and oyster reef loss, while also safeguarding coastal communities against natural disasters.