G. Harvey Ralphson, Boy Scouts in a Submarine; Or, Searching an Ocean Floor
“ The sea monster had included the line in his coil, and it drew as the boy bent lower.The air-hose seemed to be clear, but Jimmie was afraid that the flounderings of the serpent might break it. The horror was certain to do some thrashing about when he felt the keen edge of the steel.The only way was to strike some vital spot. That would end the combat at once. The serpent's head lowered with the boy, as if he had great curiosity to find out exactly what sort of a being it was that had invaded his kingdom. ”
