The narrator talks of "The word final, superior to all" and asks "Are you whispering it, and have been all the time, you sea-waves?
In this poem, there is a "boy ecstatic, with his bare feet the waves, with his hair the atmosphere dallying." The narrator talks of "The word final, superior to all" and asks "Are you whispering it, and have been all the time, you sea-waves? Is that it from your liquid rims and wet sands?" The boy finds two birds "Up this seashore in some briers" who exclaim things like "Shine! Shine! Shine!" and "Soothe! Soothe! Soothe!" For ten points, this is what poem, the first in the section "Sea Drift," in which mockingbirds sing like an "old crone" pushing the titular object in Walt Whitman's Leaves of Grass?
In this poem, there is a "boy ecstatic, with his bare feet the waves, with his hair the atmosphere dallying.
{Out of the Cradle Endlessly Rocking}