Salt marsh mosquitoes, named for the coastal areas where they breed, travel in swarms and are vicious biters but generally do not carry human diseases. Their eggs, laid on dry land, must be moistened by marine water to hatch.
Terry Whitworth, owner of Whitworth Pest Solutions, is quoted in this AP story:
Mosquitoes are bugging Grays Harbor folks
To this day, mosquitoes are still a major issue in this neck of the woods, affecting Grays Harbor County and Pacific County residents every year.