sentences:  Classical examples of this latter dynamics include population explosions of sea urchins in California's offshore kelp beds, for example, when human hunters began to kill too many sea otters, and/or sudden population explosions of jackrabbits if hunters or ranchers kill too many coyotes.The foreign species either flourishes into a local population or dies out.Not all released species will become invasive; most released species that don’t immediately die out tend to find a small niche in the local ecosystem.