"I don't see any," he said.
"Aren't there any round liver-colored lumps, Mr. Murren?" the boy asked.
"Yes, there are lots of those," was the reply.
"Those are sponges."
"They don't look like it."
"They are, sir, though. A skeleton doesn't ever look just like a man. The sponge, as you use it in a bath, is just an animal's skeleton, or it may be of several animals that have grown together."
"Yo' suah o' that, boss?" asked the boatman. "I allus hear' dat a sponge was a plant—not any animal."
"It's an animal," Colin said shortly.
"But I thought," interjected Paul, "that the difference between a plant and an animal was that an animal can move around and a plant can't."