Home > Environment > Algal Overgrowth

Threats to the Marine Environment

Coral overgrown by algae

Bluegreen Algae

Eucheuma

 

Bluegreen Algae, Honaunau, Hawaii, 40 feet

 

 

Macroalgae colonization after bleaching

Kaiona, Waimanalo, Oahu

 

 

Healthy coral

Macroalgae colonization after bleaching

Kaiona, Waimanalo, Oahu

 

Bluegreen Algae, Molokini
Invasive algae, typically alien species or natives enhanced by algae high-nutrient levels, may grow rapidly and smother corals.