The Department of Forestry, Fisheries and the Environment (DFFE) has confirmed large numbers of dead white mussel, whelks and other shellfish being washed out at St Helena Bay and Elandsbaai on the West Coast.
Members of the public have been cautioned to refrain from eating the washed-out marine animals, as they carry significant health risks, rendering them unsuitable for consumption.
The dead shellfish, which washed up on Monday and Tuesday, indicates that they died after being paralysed, unable to burrow and then washed up.
“This is most likely due to the presence of a harmful algal bloom (HAB) or red tide. Red tides are algal blooms, that is, accumulations of large amounts of phytoplankton (single-cell algae) that are common during summer and autumn along the West Coast.
“This particular red tide is colourless and therefore not visible to the human eye, but paralytic shellfish poisoning neurotoxins are extremely toxic to humans. All shellfish, irrespective of being washed out or collected from shore or subtidal, should not be eaten,” the department said on Wednesday.
The department will continue to monitor the situation with respect to the extent of the red tide and resultant mass mortalities on the West Coast. - SAnews.gov.za
