contains process marine current marine tidal flow process marine tidal flow marine tidal current A marine current which is maintained by a tidal flow process. envoCmecs envoMarine This class aligns to an ambiguously defined unit of the Coastal and Marine Ecological Classification Standard (CMECS), "Tidal Flow" (https://cmecscatalog.org/cmecs/classification/unit/643.html). In CMECS, this is treated as a hydroform, but is defined as a process (while some of its subclasses are not). In ENVO, we have aligned the CMECS unit according to its definition as a process (ENVO:01001333); however, we maintain this class to allow reference to the hydroform maintained by that process.