Update

PLETTENBERG BAY NEWS - The hordes of fish and other marine life that washed up on Plettenberg Bay’s beaches recently is a natural occurrence that happens annually, say marine experts.

Some of the species recorded include spotted grunter, horse mackerel and various puffer fish species. Large numbers of mussels also ended up on the beach.

Local marine biologist Dr Gwen Penry said that this was due to a sudden drop in sea temperature caused by easterly winds. 

The wind-driven upwelling results in cold nutrient-rich waters from the continental shelf being brought up to the surface waters.

She said that this happens every year, adding, “Especially if we’ve had a few days where the water temperature was warm and stable.

"If the easterly blows and we experience rough sea conditions the cold water reaches the surface and stuns the fish, resulting in them washing up,” Penry said.

It is no reason for concern, she assured, as the fish that washed up were not poisonous and while fresh, safe for consumption.

Read a previous article: Dead fish on beaches explained

ARTICLE: YOLANDÉ STANDER, KNYSNA-PLETT HERALD CORRESPONDENT

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