The Blue Lagoon by H. De Vere Stacpoole

The moon rose up that evening and shot her silver arrows at the house under the artu tree. The house was empty. Then the moon came across the sea and across the reef.

She lit the lagoon to its dark, dim heart. She lit the coral brains and sand spaces, and the fish, casting their shadows on the sand and the coral. The keeper of the lagoon rose to greet her, and the fin of him broke her reflection on the mirror-like surface into a thousand glittering ripples. She saw the white staring ribs of the form on the reef. Then, peeping over the trees, she looked down into the valley, where the great idol of stone had kept its solitary vigil for five thousand years, perhaps, or more.