FIG 1.

(A) Alpha diversity of sample types shows a diverse bacterial community in each of the sample types. Port water has the most diverse microbial community on average, followed by swab and bilge bacterial communities, respectively. This suggests that there is a diverse microbial community living on the boat surface (swab samples) as well as in the bilge compartment. (B) PCoA plot of the microbial community showing the boat samples clustering more closely with similar sample types than with their respective regions. This suggests that the bacterial community of the boat has unique characteristics that are distinct from those of the bacterial community of the port water.