Bermuda and skin diving set the stage for summer activities which are more colorful than their trite central theme. Mike Forrester, who has just flunked Civil War history, comes to join his father, a marine biologist who has his emotional problems too. Mrs. Forrester comes from a hide bound southern family who dislikes Mr. Forrester's travelling about and whose disapproval is magnified by Mike's failure at history. But diving proves fruitful. A treasure is discovered- a ship from the Civil War blockade- and among the loot there is a Great Seal of the Confederacy. The possibility of its authenticity inspires Mike to write a good thesis which ups his mark and brings an enthusiastic and forgiving grandmother, along with Mrs. Forrester, to Bermuda at last. Adequate light reading but not a patch on his perceptive auto racing story The Red Car (1954).