Johnny is late to meet his friends to go fishing.

When he arrives at the beach, he realises that he's forgotten to bring his lifejacket.

"Don't worry," says Ben, the boat owner. "Here's a spare one I always keep on board."

Because he's been fishing for years, Johnny knows the right way to put on a lifejacket.

He fastens the two straps across his chest and the two straps between his legs.

"Right!" he says, "it's on firmly and I'm ready to go!"

On the ocean, they find a good spot to fish and put down the anchor.

Out of nowhere, a huge wave suddenly rises above them.

"Look! The wave's going to hit us!" shouts one of the fishermen.

The boat is turned upside down and the men are flung into the water.

"Eeeeeehhh!" they yell as they are plunged into the icy water.

Not all of them can swim but, luckily, they are all wearing lifejackets.

The men cling to the side of the upturned boat.

Ben always carries a cellphone in a plastic pouch tied to his lifejacket. He calls the free emergency number 112.

"Help! We're in trouble out at sea," he says to the operator.

The Emergency Call Centre operator asks questions and listens carefully to Ben.

She will be able to tell Sea Rescue exactly where the fishermen are.

The men cling to the boat in the cold water, waiting.

Johnny whistles a tune to keep up their spirits. Time seems to pass slowly.

But after only 20 minutes, they hear the sound of a Sea Rescue boat arriving.

They're here!" whoops Ben, when he sees the yellow and red Sea Rescue boat.

"Yay!" the men chorus, happy to be alive.

Soon the fishermen are wrapped in warm blankets and the Sea Rescue boat is taking them back to the beach.

"Thank goodness we were all wearing lifejackets!" says Ben.