If you are lucky enough to witness an osprey in flight over Barnegat Bay, it should remind you that its return to the area is a symbol of one of the greatest environmental battles of the 20th century. It had some of its earliest skirmishes on what is today Island Beach State Park.

The Jersey Shore has been at war with mosquitoes since the arrival of the first visitors, and by the first half of the 20th century, Ocean County had a commission to battle the invaders by draining swamps and removing…