A red tide alert has been raised in Barangay Casinglot, Tagoloan, Misamis Oriental, following the detection of a harmful algal bloom (HAB) characterized by water discoloration.
The Bureau of Fisheries and Aquatic Resources (BFAR) Northern Mindanao confirmed the presence of Heterosigma akashiwo, a type of plankton that causes red tide.
The Tagoloan Municipal Environment Office (MENRO) issued an advisory based on BFAR's findings from seawater samples collected on September 9, 2025.
The public is strongly advised to refrain from eating dead fish from the affected area and to ensure that any seafood consumed is clean and thoroughly cooked.
Furthermore, residents and visitors are urged to avoid swimming in the discolored waters of Barangay Casinglot.
BFAR also reported that paralytic shellfish poison (PSP) levels in some areas exceeded regulatory limits, indicating a potential risk from shellfish consumption.
Red tide, or HABs, occur when certain plankton rapidly multiply, which can lead to fish kills when present in high concentrations.
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