T1I1D2E1M3A1R1K5S1
16 points
TIDEMARKS is validvalid
TIDEMARK, a mark showing the highest or lowest point of a tide [n]
TIDEMARK, a mark showing the highest or lowest points of a tide [n]
TIDEMARK, a mark showing the highest or lowest point of a tide [n]
TIDEMARK, a mark showing the highest or lowest points of a tide [n]