commercial harvesting from the ocean has caused populations of large predatory fish to decrease
harvesting_lobster is harvesting_aquatic_animals. oceans has fish reef_fish is fish. sharks is carnivorous_fish. reef_triggerfish is fish. saltwater_fish is marine_organism. fishing is catching_fish. catching_fish is harvesting_aquatic_animals. commercial_fishing is fishing. coral_reef_fish has culturally_transmitted_migration_paths