Possible Clues:

• The fish he lost in current
• It's the turn of the top of 8 down and it turns
• It gets high on the beach
• Word with low or high
• May be in, but sounding not
• Semidiurnal occurrence, roughly
• Ebbing thing
• Going in and out, or not, by the sound of it
• It may eventually turn
• It gets high every day