Waves / The Harp Seal / Blackfly

Overview

Waves: An update of the program "Freak Waves" originally broadcast in December 1980. A further look at research being done into wave formations that can destroy oil rigs on the open sea. The Harp Seal (repeat): The development of the harp seal is traced, from birth through nursing to its eventual migration northward. Blackfly (repeat): A look at disease and other problems caused by blackflies.