None of them let go the rope. They all held on for dear life, as Andy had ordered. So it was not long before they were standing up again, gasping and spluttering, salt iti their mouths and noses, but all of them determined to heave again as soon as the next big wave came.

"Look how the boat has moved!" yelled Andy, in the greatest delight. "She's almost off the rocks! Golly! Isn't this exciting?"

The boat had moved a good deal. Andy was sure that they could pull her in now. He waited patiently for the next big wave to come—and my goodness, it was a monster! The tide was at its height now, and the wind blew very strongly. A green wave put up its head, and the children gave a yell.

"Look at that one!"

"It will knock us all over again," said Mary, afraid. But she didn't let go the rope. Whether she was knocked over or not she meant to do her bit.

The wave grew bigger and higher as it came nearer to the rocks on which the boat lay It began to curl over a little—and then it struck the rocks, and the boat too.

"HEAVE-HO!" yelled Andy, in a voice as enormous as the wave! And they all heaved. My goodness, what a heave that was!

The great wave blotted the boat from their sight and came raging towards them. Jill gave a shout of fear.

"Hold on!" shouted Andy, half-afraid himself. The wave swept them all off their feet—and alas, swept them all from the rope too, except Andy, who held on with all his might.

The other three children were taken like corks, rolled over and over, and flung roughly on the sand at the edge of the sea. Then the great wave ran back down the beach, gurgling and foaming.