"A ria is a coastal inlet formed by the partial submergence of an unglaciated river valley .... that remains open to the sea." Rias may thus be fed by rivers which are insignificant in relation to the estuary's size and length. See http://en.wikipedia.org/wiki/Ria/
The connection belongs to Ecology connections.
Do you know of another WHS we could connect to Rias?
A connection should:
- Not be "self evident"
- Link at least 3 different sites
- Not duplicate or merely subdivide the "Category" assignment already identified on this site.
- Add some knowledge or insight (whether significant or trivial!) about WHS for the users of this site
- Be explained, with reference to a source