Studies comparing dispersal distances for the same taxa, such as plants or invertebrates, in terrestrial and freshwater habitats suggest freshwater organisms have larger intrinsic dispersal abilities (Boedeltje et al. 2003; Kappes et al. 2014). A key factor that may lead to differences in dispersal abilities is the medium within which species move. Water is ~800x denser than air, and the high buoyancy this creates selects for passively-dispersed life stages and promotes long-distance dispersal by flows and currents (Bonteet al. 2012; Cornell & Harrison 2013; Srivastava & Kratina 2013). These differences may be associated with life history and morphological traits in both aquatic and terrestrial organisms (but see Green et al. 2022 for a caution on using traits as proxies for dispersal distance). For example, small-bodied organisms generally require fewer adaptations and lower energetic costs to disperse longer distances in water, whereas traits designed to increase drag are required to overcome gravity in air (Dawson & Hamner 2008).