“It certainly did,” agreed another. “I guess they’re gone for good, this time, though.”
This seemed to be the general opinion among the crew, also, and the boys felt relieved in spite of themselves, for swimming in close proximity to a couple of hungry sharks, even when separated from them by a net, is not a particularly cheerful experience.
Soon everything was ready, and the swimmers descended the steps let down alongside the ship, and plunged into the water. It was very warm, but a good deal cooler than the air, and you may be sure it felt good to the overheated passengers. Bert and Ralph were expert swimmers, and dove and swam in a manner to bring applause from the passengers up above. Dick was not such a very good swimmer, having had little experience in the water. He enjoyed the dip none the less on this account, however, and if he could not swim as well as the others, at least made quite as much noise as they.
After half an hour or so of this the boys ascended to the deck to rest a little before continuing their aquatic exercises.
“My, but that felt good, and no mistake,” said Bert.
“It sure did,” agreed Ralph. “The only objection I can find is that you can’t swim far enough in any one direction. I like to have enough space to let me work up a little speed. I’ve half a mind to take a chance and dive off here outside the net. There’s no sign of those pesky sharks around now. I’m going to take a chance, anyhow,” and before anybody had a chance to stop him he had made a pretty dive over the side. He struck the water with scarcely a splash, and in a few seconds rose to the surface and shook the water out of his eyes. Bert yelled at him to come back on board, but he only shook his head and laughed.
Then he struck out away from the ship with bold, rapid strokes, and soon had placed a considerable distance between himself and the vessel. Bert and the others watched his progress with anxious eyes.
“The young fool,” growled one of the passengers, “hasn’t he got any more sense than to do a thing like that? Those sharks are likely to show up any minute. They don’t usually give up so quickly, once they’ve started to follow a ship.”
It seemed, however, as though Ralph would experience no bad results from his rash act. He had swum several hundred yards from the vessel, and had turned to come back, when a cry went up from one of the women passengers.
“Look! Look!” she screamed, and pointed wildly with her parasol. All eyes followed its direction, and more than one man turned white as he looked. For there, not more than five hundred feet from the swimmer, a black fin was cutting the water like a knife-blade. It was not headed directly for Ralph, however, but was going first in one direction, then in another, showing that the shark had not yet definitely located his prey.