Out of its midmost fires darted long streaks of light, everywhere, lightning swift, coming and going ceaselessly.
Into the midst of that brightness rushed five bolts of flame, and scattered it.

The water boiled, alive with the darting fires around me and under my feet, and my heart stood still with terror.

Yet I was not harmed.

And then I saw one of those great white-hot silver bolts hurl itself from sea to air in a wide arch, and fall back again into the water with a mighty splash; and all the flying water seemed to burn as it fled.
Truly it was but a school of mackerel, and the porpoises which fed on the silver fish, all made wonderful by the eerie fires of a summer sea; but I could not tell that all at once.

I think that I knew what it was when the great sea pig leaped, for his shape was plain to me.