Life in the World's Oceans Episode 20, Marine Mammal Interactions with Fisheries Episode 20, Marine Mammal Interactions with Fisheries.

Streaming video - 2018

With plastic and nylon lines and nets becoming common in the last century, by-catch became an even greater problem for the marine mammals. When the media picked up the story in the mid-1960s, the public became engaged, and the Marine Mammal Protection Act was passed in 1972. But whale entanglement remains a problem, and some argue that even whaling was far less cruel.