SECRET UNDER THE SEA - Classic Scholastic Book

A classic fantastic Scholastic paperback book from 1966 by Gordon R. Dickson. Wonderfully illustrated in pen and ink by Jo Ann Stover. Something giant and enormous is walking along the bottom of the ocean! A young boy in scuba gear explores the scary mystery. An action-packed nostalgic Scholastic book. Used, but in good condition with no pen markings.