and if they had only been content with this all would have been well. But they weren’t.
“Let’s dig a bath,” said Selim, “and the sea will come in and fill it, and then we can bathe in it.”
So they fetched their spades and dug—and there was no harm in that, as you very properly remark.
But when the hole was finished, and the sea came creep, creep, creeping up—and at last a big wave thundered up the sand and swirled into the hole, Thomasina and Selim were struggling on the edge, fighting which should go in first, and the wave drew sandily back into the sea, and neither of them had bathed in the new bath. And now it was all wet and sandy, and its nice sharp edges rounded off, and much shallower. And as they looked at it angrily, the sandy bottom of the bath stirred and shifted and rose up, as if some great sea-beast were heaving underneath with his broad back. The wet sand slipped back in slabs at each side, and a long pointed thing like a thin cow’s back came slowly up. It showed broader and broader, and presently the flakes of wet sand were dropping heavily off the top of a brand-new bathing machine that stood on the sand over where their bath had been.
