01.12.10 Oceanside Coastal Erosion Photos, by Andrea Holeman By SFSDAdministrator Andrea Holeman, a member of the Surfrider San Diego Advisory Committee, took these photos during the last big swell in Oceanside during the high tide. ....mmm, failing seawall. See all that damage, rocks were falling out of the concrete with every wave that splashed against the wall. Cars drive on this, people walk on it. See That water line, that's the high tide line on the Strand in Oceanside.