Cloud over the coral reef

Copyright: Registered 20Aug71 · MP26249 (Jan-Jun 1975) Copyright holder: Lee Tepley

Description: This film considers the effect of sewage pollution and sedimentation on the coral reefs of the tropics and also examines a severe ecological disturbance of unknown origin - the population explosion of the coral eating Crown of Thorns starfish, which may be caused by pollution or some other form of man’s activity.