Non-metric multidimensional scaling (nMDS) plot of non-native bryozoan species composition from each of the sampled bays in North America (PAC-Pacific, ATL-Atlantic, Gulf of Mexico-GOM). Each point represents the composition of one bay (based on presence-absence data for non-native bryozoan taxa), with the distance between any two points representing the differences between those two bays’ communities as defined by the Bray-Curtis dissimilarity metric (closer = more similar). nMDS stress = 0.08.