Hurrying to the boat they tumbled in and rowed as silently as possible to the point and peered beyond. There was no sign of a manatee, but ever-widening ripples on the calm water showed where some creature had been a few moments before and presently, from up a narrow lane of water, they heard a snort and a short bellow again.

“He’s gone up that channel,” declared Frank in a whisper. “Come along! He’s bound to come up. Gee! I would like to see one. Mr. Rawlins says they’re eight or ten feet long and with skin like an elephant.”

Paying little heed to where they were going the two interested and excited boys, keen on their chase of the elusive manatee, paddled up the winding channel among the mangroves while ever just beyond, they could hear the snorts or the rumbling bellow of the creature they were following.

Presently they swung around a bunch of the trees and found themselves upon a small lake-like lagoon several hundred acres in extent and surrounded by the mangrove swamp.

“I’ll bet he’s in here,” declared Tom. “Let’s sit still and watch.”

Taking in their oars the boys sat motionless, gazing about the tranquil surface of the lagoon and watching for the expected appearance of the sea-cow.

Suddenly Frank gripped Tom’s arm. “Look!” he whispered. “There he is. See, crawling up on that mud bank!”

“Gosh! that’s so,” agreed Tom and fascinated, the two boys watched as a big, bulky, black creature emerged from the dark still water and slowly and with great effort drew himself onto the wet mud flat among the trees.

“Jimmy, isn’t he a queer beast!” exclaimed Frank in an undertone. “Looks like a seal; and what a funny head!”

“I wish we were closer,” whispered Tom. “Don’t you suppose we could sneak nearer?”