Coral Reefs of Alega Bay

Vibrant underwater ecosystems teeming with life, protecting our coastline and sustaining Samoan marine traditions for generations.

Living Underwater Gardens

The coral reefs of Alega Bay represent some of the most pristine and biodiverse reef systems in American Samoa, covering over 25 acres of protected marine habitat.

These living ecosystems provide essential services including coastal protection, fish habitat, and cultural significance for traditional Samoan fishing practices.

Our comprehensive reef conservation program combines scientific research, community engagement, and active restoration to ensure these vital ecosystems thrive for future generations.

25
Acres of Reef
150+
Coral Species
500+
Fish Species
30+
Years Protected

Reef Ecosystem Zones

Explore the different zones of our reef ecosystem, each supporting unique communities of coral and marine life.

Reef Flat
0-3m

Shallowest area exposed at low tide, home to hardy corals.

Conditions: High light, high temperature, strong waves
Key Species: Acropora, Porites, Sea grasses

Reef Zone Gallery

Reef Crest
3-10m

Highest energy zone with breaking waves and strong currents.

Conditions: Constant wave action, high oxygen
Key Species: Encrusting corals, Surgeonfish, Parrotfish

Reef Zone Gallery

Fore Reef
10-30m

Sloping area with diverse coral communities and fish populations.

Conditions: Moderate light, stable temperature
Key Species: Brain coral, Table coral, Butterflyfish

Reef Zone Gallery

Deep Reef
30m+

Deeper waters with specialized coral species adapted to low light.

Conditions: Low light, cooler temperatures, calm waters
Key Species: Plate corals, Sponges, Deep water fish

Reef Zone Gallery

Signature Coral Species

Meet the foundational coral species that build and maintain our vibrant reef ecosystems.

Brain Coral
Favia spp.
Healthy

Large, slow-growing corals that create complex reef structures.

Coral Species Gallery

Staghorn Coral
Acropora cervicornis
Recovering

Fast-growing branching corals that provide critical fish habitat.

Coral Species Gallery

Table Coral
Acropora hyacinthus
Thriving

Flat-topped corals that create shelter for many reef species.

Coral Species Gallery

Mushroom Coral
Fungia spp.
Stable

Free-living corals that can move across the reef floor.

Coral Species Gallery

Coral Conservation Initiatives

Our active programs to protect, restore, and enhance coral reef health in Alega Bay.

Coral Nursery Program

Growing coral fragments in protected nurseries before outplanting to damaged reefs.

Active
Progress75%
Impact: 5,000+ corals planted

Water Quality Monitoring

Regular testing of water parameters to ensure optimal coral health conditions.

Established
Progress90%
Impact: Weekly testing at 15 sites

Coral Bleaching Response

Rapid response team to monitor and assist corals during bleaching events.

Developing
Progress60%
Impact: Protected 20 key reef areas

Community Reef Guardians

Training local community members as reef conservation ambassadors.

Growing
Progress85%
Impact: 50+ trained guardians

Threats & Our Response

Understanding challenges to reef health and implementing science-based solutions.

Ocean Warming

Rising sea temperatures causing coral bleaching and stress.

Mitigation:
Water temperature monitoring, heat-resistant coral research

Ocean Acidification

Increased CO2 absorption reducing coral calcification rates.

Mitigation:
Water chemistry monitoring, local pollution reduction

Crown-of-Thorns Starfish

Outbreaks of coral-eating starfish damaging reef sections.

Mitigation:
Regular monitoring and removal programs

Coastal Development

Sedimentation and runoff from nearby construction activities.

Mitigation:
Buffer zones, erosion control measures

Current Research Projects

Cutting-edge research advancing coral conservation science and practice.

2024-2026

Coral Resilience Study

Identifying coral species and genotypes with natural resistance to stress.

Partners: University of Hawaii, NOAA
2023-2025

Reef Connectivity Mapping

Studying larval dispersal patterns between reef sections.

Partners: Smithsonian Institute
2024-2027

Microbiome Analysis

Researching beneficial bacteria that support coral health.

Partners: Scripps Institution

Protect Our Coral Heritage

Join us in preserving Alega Bay's coral reefs. Your support helps protect these vital ecosystems, advance coral restoration science, and ensure healthy oceans for future generations.