"Little Hands, whistle!" The sleek, gray cetacean did a barrel roll to Toshio's right, then drew nearer to eye the boy casually. "Whistle us a tune about shipsss and space and going home!"

Keepiru's voice, echoing from a complex set of chambers under his skull, rumbled like the groaning of a bassoon. He could just as well have imitated an oboe, or a tenor sax.

"Well, Little Hands? Where is your sssong?"

Keepiru was making sure the rest of the party could hear. The other fins swam quietly, but Toshio could tell they were listening. He was glad that Hikahi, the leader of the expedition, was far ahead, scouting. It would be far worse if she were here and ordered Keepiru to leave him alone. Nothing Keepiru said could match the shame of being protected like a helpless child.

Keepiru rolled lazily, belly up, next to the boy's sled, kicking slow fluke strokes to stay easily abreast of Toshio's machine. In the crystal-clear water of Kithrup, everything seemed strangely refracted. The coral-like peaks of the metal-mounds shimmered as though mountains seen through the haze of along valley. Drifting yellow tendrils of dangle-weed hung from the surface.

Keepiru's gray skin had a phosphorescent sheen, and the needle-sharp teeth in his long, narrow, vee mouth shone with a teasing cruelty that had to be magnified… if not by the water, then by Toshio's own imagination.

How could a fin be so mean?

"Won't you sing for us, Little Hands? Sing us a song that will buy us all fish-brew when we finally get off this sssocalled planet and find a friendly port! Whistle to make the Dreamers dream of land!"

Above the tiny whine of his air-recycler, Toshio's ears buzzed with embarrassment. At any moment, he was sure, Keepiru would stop calling him Little Hands and start using the new nickname he had chosen: "Great Dreamer."

It was bad enough to be taunted for having made the mistake of whistling when accompanying an exploration crew of fins — they had greeted his absentminded melody with razzberries and chittering derision — but to be mockingly addressed by a title almost always reserved for great musicians or humpback whales… it was almost more than he could bear.