The seal density in south Puget Sound is among the highest in the world, and they are the most commonly seen marine mammal in the region. They are present year-round and most travel less than 60 miles from their birth site in their lifetime; Therefore, the seals surrounding Vashon Island are genetically distinct from those located in the northern Puget Sound and Hood Canal. They have excellent eyesight in and out of the water and their whiskers are capable of feeling vibrations in water movement to detect both predators and prey. Local seals can dive to a depth of more than 300 feet but typical dives are less than 150 feet, lasting between 4 and 6 minutes. Most hunting will occur within a few miles of their haul out site where we see them out of water. Locally pupping occurs between late June and September making for good pup watching through the summer paddling season.
Learn more at: https://www.sealsitters.org/marine_mammals/harbor_seals.html