The document discusses the occurrence of cyanobacteria in southwest Tobago, which has caused skin infections in people bathing in the affected areas. It has been seen covering the waters from Flying Reef to Castara since July-August 2010, most severely impacting Mt. Irvine Bay and Buccoo Bay. Cyanobacteria thrive in nutrient-rich waters, suggesting sewage or other domestic waste may be contributing to its growth. Its toxins can harm humans, fish and other marine life. Short term solutions proposed include closing beaches temporarily and increased water sampling and testing.