Galápagos study identifies keystone predator in a complex food web

Source: Science Daily

Years of experiments and careful observation along the shores of the Galápagos Islands have untangled a complex food web of sea lions, fish, urchins and algae, revealing who eats (or doesn’t eat) whom and what impact they have on each other.

https://www.sciencedaily.com/releases/2017/05/170501094244.htm