| NEAP | Tide of least range between high and low water |
| NEAPTIDES | Points of least difference between high and low water (4,5) |
| NEAPTIDE | Point of least difference between high and low water (4,4) |
| BEACH | Sandy shore by the sea between high- and low-water marks (5) |
| INTERTIDAL | Cover tons laid out between high and low water (10) |
| FORESHORE | Area between high and low water marks (9) |
| TIDALPOWER | Any form of renewable energy in which the movement of ocean water between high and low tide is converted to electric power (5,5) |
| DAM | Tidal barrage power systems take advantage of differences between high and low tides by using a "barrage," or type of ___, where water passes through a turbine that generates electricity (3) |
| MID | Humidified a little between high and low perhaps |
| HYMNAL | Church song-book has many a variation between high and low (6) |
| YODEL | Sing alternating between high and low notes (5) |
| STREAM | A rivulet of running water, thus a drift of same-aged schoolchildren, flow of thought, river of data, surge of words, tide of people or trickle of money (6) |
| TIDES | High and low waters (5) |
| DREADNOUGHT | Warship leaders of English and Danish navies used in period of low water |
| MIDS | Frequencies between highs and lows of the audible audio frequency spectrum |
| ISOBARS | They're found between highs and lows |
| CRIMEWAVE | PART OF THE TIDE OF LAWLESSNESS |
| DEADSEA | Low water reveals victim of orca maybe, minus tail (4,3) |
| OARWEED | Any of various brown seaweeds common below the low-water mark (7) |
| DOUBLE | This low-water type of hook is popular with salmon anglers (6) |
