Latitude, Longitude, and Elevation values are given as averages where samples were collected by dredge. DIC in McCulloch sample set has been calculated from reported ALK and pH. Carbonate system parameters in Anagnostou sample set are as re-calculated in Stewart et al., 2016, using GLODAP ALK and DIC. Carbonate system parameters for new data reported here are calculated from GLODAPv2 ALK.Coral subsamples represent different solid pieces/powder subsampled from the same specimen. Note that Anagnostou et al. 2011 give a weighted average of these values, which is reported in the d11Bcoral column.