The National Sea Rescue Institute has warned beach-goers to be extremely vigilant after they had seen an increase in shark activity along the False Bay coastline.

This past week people at Fish Hoek and Muizenberg beaches have been asked to leave the water at different times following sharks being spotted close inshore.

According to NSRI spokes-man Craig Lambinon, studies show that around this time of year sharks' feeding patterns meant they swam closer to the coastline.

On Wednesday, NSRI volunteer Sean Searle saw a shark fin close on the tail of two surfers at Lookout Beach.

Article Continues: IOL