Echoes in the Sand

Have you ever tried to sell a seashell to a starfish?
They're terrible negotiators, opting instead for ocean tides over coin tides.

The echo here prefers its solitude with a

Sandcastles stand proud, until a lonely crab courts them, claiming royalty status with its sideways waltz.

Echoes here have poetry in their drift, but rhyme only when it's advantageous—much like the tide-roving gulls.

Speaking of, did you hear about the sand that wanted to become a star? It took a grainy leap of faith!