They were close enough to see that it was an enormous fire that had by some miracle been kindled on the very surface of the ocean. Crackles and roars came out of it, and it billowed and stretched easily, sometimes drawing itself up and surging hundreds of yards straight up into the air, other times growing squat and spreading out over the hissing surface of the calm sea. At times black shapes became visible in its heart: suggestions of massive ribs, and a broken mast clothed in fire. Sparks of green, red, and blue flame appeared here and there as exotic Oriental pigments and minerals were reached by the flames.