shadowy shapes of dead ships, wrecked and sunk Heaven only knows how many years ago; and passing them we would speak in hushed whispers like children seeing monuments in churches.
Here too, in the deeper, darker waters, monstrous fishes, feeding quietly in caves and hollows would suddenly spring up, alarmed at our approach, and flash away into the gloom with the speed of an arrow. While other bolder ones, all sorts of unearthly shapes and colors, would come right up and peer in at us through the shell.
"I suppose they think we are a sort of sanaquarium," said Bumpo—"I'd hate to be a fish."
It was a thrilling and ever-changing show. The Doctor wrote or sketched incessantly. Before long we had filled all the blank note-books we had left. Then we searched our pockets for any odd scraps of paper on which to jot down still more observations. We even went through the used books a second time, writing in between the lines, scribbling all over the covers, back and front.
Our greatest difficulty was getting enough light to see by. In the lower waters it was very dim. On the third day we passed a band of fire-eels, a sort of large, marine glow-worm; and the Doctor asked the snail to get them to come with us for a way. This they did, swimming alongside; and their light was very helpful, though not brilliant.
How our giant shellfish found his way across
