At least four Bronze Whaler sharks spotted at Christies Beach on Wednesday

The shark siren has sounded with a group of four big shark spotted not far from the coastline at Christies Beach.

Beachgoers are warned to take caution after a group of sharks have been spotted at a popular southern suburb beach on Wednesday afternoon.

SA Police have issued a warning on social media about 2.25pm, reporting that three or four sharks believed to be Bronze Whalers were spotted a mere 100m offshore at Christies Beach.

It is believed that the sharks are a Bronze Whalers, about 1.5m long.

An alarm was sounded to warn swimmers but fortunately, there was no one in the water at the time.

Originally published as At least four Bronze Whaler sharks spotted at Christies Beach on Wednesday