EN · pondweed family
DE · Laichkrautgewächse
LT · plūdiniai
LV · glīveņu dzimta
PL · rdestnicowate
https://en.wikipedia.org/wiki/Potamogetonaceae The family has a subcosmopolitan distribution, and is considered to be one of the most important angiosperm groups in the aquatic environment because of its use as food and habitat for aquatic animals.