Publication date is from the container. Films Media Group--disc label.

Once conducted almost entirely on dry land, the hunt for biochemical and pharmaceutical resources is shifting to the world's oceans. This program examines various phases of that research-- algae and sponge extraction around the globe, the growing utilization of toxic substances produced by some marine organisms, and the practical application of treatments and cures that are often a dozen years in the making. With its ethical discussions about animal testing and the prerogatives of developing countries, "Sea changes" provides a balanced exploration.