V. vulnificus abundance as a function of temperature and salinity. The data was compiled from this study and the studies summarized in Table 1. Only abundances that are >1 cell ml−1 are plotted on this graph. The sizes of the bubbles are proportional to the relative abundance of V. vulnificus, which is grouped into nine categories: 1 to 50, 51 to 100, 101 to 250, 251 to 500, 501 to 750, 751 to 1,000, 1,001 to 2,500, 2,501 to 5,000, and >5,000 cells ml−1.