"Sea Monster, heave Ho !" came a voice from inside the head.

Then as the strange creature came to a halt, the head, the hump and the tail lifted up, and there underneath, were Captain Pugwash, the Mate, Barnabas and Willy.

"Splendid me Hearties!" cried the Captain. "Provided we keep within our depth we cannot fail. Now we can proceed with my plan.