Well you were right, Kenny points out that there are fresh water aquatic beds of "grasses", "mosses" and kelp and algae in the next email.
But we have different tags for saltmarsh and marsh, so I think it is good to have natural=seagrass or wetland=seagrass in addition to some other tags for fresh-water underwater plants like these freshwater "eelgrasses" (different family) https://treasurecoastnatives.wordpress.com/category/vallisneria/ https://www.researchgate.net/figure/A-Vallisneria-nana-bed-with-continuous-cover-meadow-Swathes-grazed-by-pig-nosed_fig7_233410033 https://enacademic.com/dic.nsf/enwiki/534107 Personally, I won't be trying to map the extent of these underwater aquatic beds myself, it's enough to tag natural=water for lakes and waterway=riverbank for river areas, plus the various wetland tags for areas where the vegetation is above the water level. The presence of underwater vegetation, like the surface of the riverbed/lakebed, are much harder to verify and correctly map in most places, unless you have very clear water and good aerial imagery at the right time of day. Joseph On 12/19/19, Graeme Fitzpatrick <graemefi...@gmail.com> wrote: > On Thu, 19 Dec 2019 at 07:01, Joseph Eisenberg <joseph.eisenb...@gmail.com> > wrote: > > Although I'm sure that someone will now point out underwater grasses > growing in fresh water, so they can't be called seagrass! > > Thanks > > Graeme > _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging