How does imagery help evoke emotion in this poem

Yes! in the sea of life enisled,
With echoing straits between us thrown,
Dotting the shoreless watery wild,
We mortal millions live alone.
The islands feel the enclasping flow,
And then their endless bounds they know.

But when the moon their hollows lights,
And they are swept by balms of spring,
And in their glens, on starry nights,
The nightingales divinely sing;
And lovely notes, from shore to shore,
Across the sounds and channels pour—

Oh! then a longing like despair
Is to their farthest caverns sent;
For surely once, they feel, we were
Parts of a single continent!
Now round us spreads the watery plain—
Oh might our marges meet again!

Who order'd, that their longing's fire
Should be, as soon as kindled, cool'd?
Who renders vain their deep desire?—
A God, a God their severance ruled!
And bade betwixt their shores to be
The unplumb'd, salt, estranging sea.

Do you know what imagery is? What images are evoked by this poem? What is the point made by the poet? How does his/her use of images make the point?

http://www.poetryarchive.org/glossary/imagery

In this poem, imagery is used to evoke emotions by painting vivid and descriptive pictures in the reader's mind. It helps create a sensory experience that intensifies the emotional impact of the words. Here's how imagery is employed to evoke emotions in this poem:

1. "Sea of life enisled" - The imagery of the vast ocean serves as a metaphor for the isolation and separateness of human existence. It evokes a sense of loneliness and detachment.

2. "Echoing straits between us thrown" - This image of the straits emphasizes the distance and barriers that separate individuals, further contributing to the feeling of isolation.

3. "Dotting the shoreless watery wild" - Here, the image of countless islands scattered across the boundless sea emphasizes the sheer number of individuals, yet they still remain isolated and alone. It evokes a sense of insignificance and insignificance in the grand scheme of things.

4. "Moon their hollows lights, And they are swept by balms of spring" - This imagery of moonlight and the arrival of spring creates a peaceful and serene atmosphere. It evokes feelings of beauty, hope, and renewal.

5. "Lovely notes, from shore to shore, Across the sounds and channels pour" - The image of nightingales singing across the islands conveys a sense of enchantment and joy. It adds a musical quality to the poem and evokes emotions of pleasure and longing.

6. "Oh! then a longing like despair Is to their farthest caverns sent" - This line uses imagery to depict the intensity of longing felt by the islands. The use of "despair" intensifies the emotions, evoking a sense of deep yearning and desperation.

7. "Now round us spreads the watery plain— Oh might our marges meet again!" - The imagery of the vast, open sea emphasizes the longing for connection and reunification. It expresses a desire for the boundaries to disappear and for unity to be restored.

Through the use of these vivid images and metaphors, the poet evokes emotions of loneliness, isolation, longing, despair, and hope. The reader can feel a deep sense of yearning for connection and a longing for the eradication of the barriers that separate us.