Spring tides are when the water &quot;springs up&quot; the most&#151;the days of the highest high tides and lowest low tides.
(Spring tides; are; when the water &quot;springs up&quot; the most&#151;the days of the highest high tides and lowest low tides)
Spring tides
are
when the water &quot;springs up&quot the most&#151;the days of the highest high tides and lowest low tides