The speaker in "The Tide Rises, The Tide Falls" conveys the idea that nature is eternal and continues regardless of individual existence. The poem suggests that nature is powerful and indifferent to human life, emphasizing the transient nature of human existence in the face of nature's enduring presence.

the opposite of low tide is high tide.

Neap tide

you have a high tide and low tide, tides are affected by the Moon. There is also something called Neap tide and Spring tide. Spring tide occurs in spring and sometime throughout the year. Neap tide is when there is a higher low tide and a lower low tide. Spring tide is when there is a higher low tide and lower high tide

ebb tide.