Awkward and cumbersome on land, harbor seals maneuver with grace and agility in the water. They can even sleep with their bodies nearly submerged in water, exposing only the tip of their nose to the air—a posture called "bottling."
There is currently no commercial hunting of harbor seal, but some native subsistence hunting of seals still occurs. Because they compete for many of the same species of fish, harbor seals are sometimes killed by commercial fishers. Seals can also become entangled and drown in fishing nets and gear.
Small groups of harbor seals haul out in protected shoreline areas to breed, moult and rest.