Re:Fjord - I'm sure most of us know this one but the word has a great ring to it - those steep ocean inlets like in Norway - and Newfoundland, and Labrador!

Ahem, cough, cough, NY's Hudson river is the souther most fjord in north america. the harbor is silting up rapidly, and turn the harbor into an estuary-- but it is still technocally a fjord.

a fjord is a sunken river, into which the sea has pushed..
in NY, salt water can be detected all the way up to poughkeepsie, 60 some odd miles up river..

the river is (stacked?) the fresh water floats on top of the denser salt water-- something like the thermocline--only its a salt/fresh water change.. (with brackish water too)

even a casual visiter can experience the same effect we all associate with fjords.. steep cliff, narrow or almost no river bank, in Manhattan.. the Metpolitan museums Cloisters in upper manhattan are a prime place to see the steep cliffs that bank the hudson. 20 or 30 miles upriver, at bear mountain,Hi Rubrick!, the river is narrow, runs fast and is over 265 feet deep! that is one sunken river!
It no wonder hudson thought he had found the great north west passage! I'll look for some photos of hudson from the cloisters.. but if you ever say the movie, "looking for Richard"-- you have seen them. most of the locations shots where in NYC, and several were in the cloisters.