Sentences with phrase «natural spawning grounds»
The group believes that the species, whose last remaining stronghold is the Caspian Sea, is on the brink of extinction after decades of overharvesting and damage to its natural spawning grounds.
http://www.sciencemag.org/
This «imprints «the harbors as the natural spawning grounds of the fish, so that they return to spawn when they reach adulthood.