Rip currents appeared in Haeundae Beach at 1:10 pm on Monday and 70 people who were swimming by the shores were safely rescued.
A rip is a strong, localized, and narrow current of water which moves directly away from the shore, cutting through the lines of breaking waves like a river running out to sea, and is strongest near the surface of the water.
Rip currents occurred at two places of the beach at the same time. 50 people, including rescue workers and lifeguards, were sent out to rescue everyone out of the beach for 20 minutes.
The waves reached 3 to 5 meters in height when they struck around 9 a.m. in the morning.
Rip currents in Haeundae Beach were the first for this summer.