In the book Cay why Phillip frightened at beginning of book?

Philip was frightened at the beginning of the book Cay because he was lost and all alone on a small, deserted island. He realized that he had been separated from his family and friends and was uncertain about what had happened to them. Furthermore, he was unfamiliar with the island's environment, fearful of the potential dangers it might hold and unsure about how he would survive in this newfound, desolate setting.