BEACHGOERS in Perth's south had a special treat as they took relief from the heat - a pod of dolphins came in to visit.

About a dozen people were at Shoalwater Beach near Rockingham when 11 dolphins swum up for a play at about 1pm on Saturday afternoon.

Emma Forrester, who was at the beach with her partner and their dog, shot the video footage as the dolphins came into shore.

"We saw them come into the beach (and) one almost beached itself," she said.

"They hung around for about 20 minutes then swam further down the beach so they were probably there for at least half an hour."

There is a healthy dolphin population at many places along the WA coast, including Rockingham and Mandurah.

Dolphins are known to come into shallow waters in search of food.