1. The algae are harmful to marine life and to humans.

2. Without the algae, the coral loses its major source of food and is more susceptible to disease.

3. Without the algae, corals lose a significant source of food and are more vulnerable to disease.

4. Residents and business owners blame the algae on pollutants streaming from the lake.

5. The brilliant blue reflective cells on a giant clam can reflect sunlight for algae living inside its shell.