What are some of the boys and littluns becoming afraid of? (Provide text quotes from the book.)

The littluns are afraid of the "beastie."

“They talk and scream. The littluns. Even some of the others. As if—”

“As if it wasn’t a good island.”

Astonished at the interruption, they looked up at Simon’s serious face.

“As if,” said Simon, “the beastie, the beastie or the snake-thing, was

real. Remember?”