Answer: tideland

AnswerCrossword Clue
TIDELANDState-owned underwater tract.
TIDELANDOne source of oil.
TIDELANDSoft clam's home
TIDELANDBeach
TIDELANDCoastal land alternately submerged
TIDELANDCoastal land regularly submerged
TIDELANDArea often covered by flooding
tidelandland overflowed during flood tide
tidelandland covered and uncovered by the tide
tidelandland alternately exposed and covered by the ordinary ebb and flow of the tide
tidelandsubmerged offshore land within the territorial waters of a state or nation