There is a lot of wood that doesn't float, I guess the options were to put dense wood and less ballast or wood that floats and more ballast. I think it's oak a

There is a lot of wood that doesn't float, I guess the options were to put dense wood and less ballast or wood that floats and more ballast. I think it's oak and is just saturated with water though. Here is the "global wood density database" (an excel file): http://datadryad.org/repo/handle/10255/dryad.235 http://datadryad.org/repo/handle/10255/dryad.235 (http://datadryad.org/bitstream/handle/10255/dryad.235/GlobalWoodDensityDatabase.xls?sequence=1 http://datadryad.org/bitstream/handle/10255/dryad.235/Global...) http://blog.mischel.com/2012/10/21/woods-that-sink/ http://blog.mischel.com/2012/10/21/woods-that-sink/ The photograph is likely heavily photoshopped, the caption says it's a "composite photograph".