“…In addition to these impediments, ecological studies of seagrasses can be confounded by taxonomic uncertainty. Despite seagrasses representing less than 0.1% of all known angiosperm taxa, the taxonomic status of some species remains unclear, with high morphological similarity within certain groups of taxa contributing to this (Vanitha et al, 2016). For a few taxa, convergent morphology has been documented (Waycott et al, 2006), which along with morphological plasticity (Maxwell et al, 2014;McDonald et al, 2016), can render species identification using traditional phenotypic characters alone ineffective, or highly challenging.…”