No, it is connected to the ocean by an inlet but the salinity changes due to freshwater rainfall.
a salt water lake has a freshwater inlet but and inland sea has no inlet.
I know a couple examples, all of which are in Long Island, NY: Shinnecock Inlet Rockaway Inlet East Rockaway Inlet Fire Island Inlet Moriches Inlet
isthmus**fjordA narrow inlet is a ria.
The address of the Inlet Historical Society is: Po Box 473, Inlet, NY 13360-0473
The address of the Town Of Inlet Public Library is: 164 N. Rt. 28, Inlet, 13360 0274
Glacial inlet is called a fiord.
narrow inlet> isthmus
estuaryAn estuary is a partly enclosed coastal body of water with one or more rivers or streams flowing into it, and with a free connection to the open sea
an inlet
usually freshwater.......
Sebastian Inlet is located in Sebastian Inlet State Park. Sebastian Inlet State Park is located in Brevard County Florida and Indian River County, Florida.