"Go ahead," answered Jack. "I'm with you."
"All right."
The boys lost no time in getting down to the beach. They found it hard and firm, and made their way to the strip of grass-covered land lying beyond. Up and down they wandered, finding many curious and beautifully marked shells where the waves had washed them.
Suddenly Jack gave a big jump and let out a yell.
"What's the matter?" asked Mark.
"I thought I saw one of those cocoanuts move," answered Jack, pointing to where several of the big shaggy fruits lay under a tree from which they had fallen.
"I guess you're right," spoke Mark. "I certainly saw one of them take a little side step. I wonder what does it."
As the boys watched they were surprised, to see one of the cocoanuts come toward them, apparently advancing without any visible means of locomotion.
"This is a queer country," remarked Jack, getting ready to run in case the strangely moving cocoanut might be a warning of danger.
"Look! There's a whole lot of them moving," cried Mark.