“Say, that's a little streak of seaweed,” decided Farnol, beginning to move toward it.
Then all three perceived it was merely seaweed. The shark-like illusion disappeared completely the moment someone doubted it.
“Who cried out sharks anyway?” demanded Smith of Madden.
“Greer there warned me—he yelled 'school of sharks.'”
“Where did you see them?” inquired Caradoc of Farnol.
“You shouted school of sharks to me yourself,” defended Greer.
“I! I!” puffed Caradoc, whose spurt had blown him badly. “I said nothing about sharks!”
“Well, what did you say?” demanded Greer.
Caradoc thought back fretfully. “I said we were running into a cul de sac.”
“A cool de sock!” repeated Greer with irritation. “What did you want to say 'cool de sock' for?”
“I was calling to a gentleman,” panted Smith with an edge of temper in his tone, “and here you've swung us clear off our bearings
