The boy doesn't weep at the collapse of a sand castle. He finds another sport swimming with his friends. Childhood delights by the big blue sea never get erased from memory. It looks each had its own delight to offer. The little boy immersed in building a castle with soft hands and innocent indifference to what is to come, the frothy sea uncaring and aggressive and the boy's delighted reaction to the fall of castle- everything offers something to see, imagine and think about.

Imagery-
Imagery shows what is mentioned in the poem. The observer of the boy and his building describes things as seen. visual and aural imagery. I can see the sea as well, as it rushes to the shore to demolish the dreamy sandy castles.

It flows well.

Write on!