They had just passed the stern of the Holland XI. when Oscar grabbed Andy by the arm and pointed ahead.
A huge mound of sand was moving, as if it were alive!
With anxious eyes they gazed on the sand pile, until of a sudden it was scattered in all directions and from underneath a huge sea serpent showed itself.
The monster was all of thirty feet long and as thick around as a good-sized stovepipe.
It had a broad, flat head, from out of which shone two hideous eyes of bright yellow.
Its color was green and white, and its tail was shaped like that of a fish.
In a twinkle it curled itself into a number of loops and raised its slimy head.
Those piercing eyes were turned first upon Andy and then upon Oscar.
They moved from one to the other with the steadiness of a clock pendulum, and each young man was fairly fascinated.
Andy tried to move, but found himself rooted to the spot, for those yellow eyes had burnt themselves into his very brain.