forget the cost of the wall. This is creative thinking on how to not build a project while at the same time enriching the elite group of “Enviromental Activists” who will have a field day raising money on disturbance of habitat lawsuits:
Harbor seals:
http://www.marinemammalcenter.org/education/marine-mammal-information/pinnipeds/pacific-harbor-seal/
A dozen shark species - including “Leopard Shark, Pacific Angel Shark, Brown Smoothhound, Broadnose Sevengill, Soupfin Shark.”
https://www.sfbaywildlife.info/species/sharks.htm
sea lions:
https://www.mercurynews.com/2018/03/27/southern-sea-lions-gravitating-to-marin-northern-california/
and whales, like Humphrey and Delta and her daughter Dawn:
http://www.marinemammalcenter.org/patients/success-stories/delta-dawn-sacremenot.html
I’m afraid the extra weight of all those pilings and concrete will cause the airport to “Capsize”.