The KwaZulu-Natal Sharks Board described it as the greatest shoal on Earth.
Every year during the winter months of June and July, sardines swim upstream to the east coast to take advantage of the cooler winds.
Greg Thomspon, acting head of operations at the KZN Sharks Board, said there have been reported activity in the Eastern Cape, between the Haven Hotel and Hole in the Wall near Coffee Bay.
“It is still very quiet further north with scattered Gannets seen in some areas but it does seem like they are feeding on mixed bait fish. There are a few south westerly winds due in the next week which hopefully could get the sardines moving north,” he said.