Trophic Cascade: Apex Predators, Ocean Ecology and the Food Chain

  • English

  • Listen

    This week on World Ocean Radio we're discussing trophic cascade: an ecological phenomenon triggered by the addition or removal of top predators, involving changes in populations of both predator and prey through the food chain which often results in dramatic changes in the ecosystem. Shark, manta ray, totoaba, bahaba: all are aggressively harvested from the sea for their supposed medicinal properties and status. In this episode we ask listeners to consider this: if certain endangered species do in fact contain medicinal value, are there not other, more supportive and sustainable ways to meet demand without decimating the supply?

%s1 / %s2

Do you prefer the written word? Head on over to

About World Ocean Radio
World Ocean Radio is a weekly series of five-minute audio essays available for syndicated use at no cost by college and community radio stations worldwide. Peter Neill, Director of the World Ocean Observatory and host of World Ocean Radio, provides coverage of a broad spectrum of ocean issues from science and education to advocacy and exemplary projects.

Image Credit
Jakob Owens @jakobowens1