Keywords: FMIB 49832 Dolphin pile from Richmond Municipal Pier, driven December, 1917, broken out July, 1920 Note large tubes of Xylotrya and smaller.jpeg check categories 17 September 2015 2 Dolphin pile from Richmond Municipal Pier driven December 1917 broken out July 1920 Note large tubes of Xylotrya and smaller ones of Teredo navalis and erosion by Limnoria at breaking level Sphaeroma also present Breaking zone exposed at low tide Subject Piling Civil engineefing Weathering Tag Coasts 1921 Cite book Report on the San Francisco Bay Marine Piling Survey San Francisco Bay Marine Piling Committee San Francisco CA San Francisco Bay Marine Piling Committee 1921 1st Plate 14 Fig 1 San Francisco Bay Marine Piling Committee PD-UWASH-FMIB Institution University of Washington FMIB-source accession number 49832 Images from the Freshwater and Marine Image Bank to check San Francisco Bay Marine Piling Committee Weathering |