The phrase "seal population" refers to the total number of seals living in a particular area or habitat, such as a coastline or body of water. Full definition
The social system of elephant seals populations is shaped by two factor: land breeding during a short breeding season and strong tendency of females to aggregate when on land. (eleseal.org)
The seals are further protected by international agreements, and fur seal populations are recovering. (en.wikipedia.org)
The world wide harbor seal population is estimated to be 500,000 individuals. (marinemammalcenter.org)