"What does that matter?" said the professor. "We've something else to do."
"What?"
"Catch your sea-serpent," was the reply, as the older man pointed to the green and scarlet gleam in the water.
"It must be thirty feet long," Colin said, then realizing that his tone suggested that he was afraid, he added boldly, "but I'm game. What is it, anyway?"
"You're not so far off in calling it a sea-serpent," his companion said; "at least, it's more like the fabulous monster than any other fish that we know."
"But how are you going to catch it?" the boy asked.
"By hand," the professor replied, slipping off his outer clothes.
"You mean you're going in after it?" queried the boy with amazement.
"Certainly," the other answered; "it's harmless enough."