Nobody climbs to a cliff in search of metaphysical limits. They go because it is hot. Bonta's poem begins with exactly that modest motive: "sitting by a cliff / to escape the heat." The speaker is after shade, not revelation. In the next couplet the tone swerves: "I am resolved to find / the bottom of the possible." The gap between those two stanzas is where the poem's humour and its depth both live. A person who came for a cool spot announces a grand mission, and the poem lets us watch how that mission fares.
The phrase "the bottom of the possible" is the strangest in the poem. We usually talk about the edge, the limit or the ceiling of what can be done. Bonta turns possibility into something with depth, like water you could sound with a weighted line. The wording is formal ("resolved") beside the casual opening, so the speaker sounds a little too solemn for someone sitting in the shade. The line break after "find" also helps. The sentence hangs for a moment, and the reader wonders what could be worth such determination before the answer arrives, vast and slightly absurd.
The title does quiet work here. "Littoral" means belonging to the shore, the strip where land and water meet. The sea is never mentioned until the wren brings it up, but the title has already placed us at that boundary. The speaker is in an in-between place, cliff above, water out there, sand underfoot, and this suits someone who wants to probe limits. Notice too that the word is precise and a little scholarly, yet the poem around it is plain and conversational. That contrast gives the poem its particular flavour.
Then comes the wren: "a wren tells me / the sea's too tedious." The deadpan "tells me" treats a small bird's opinion as ordinary conversation. The bird's verdict is a shrug, and the word "tedious" is a wonderful deflation. The sea is usually a symbol of the infinite and the sublime, and here it is dismissed as boring, perhaps because of its endless repetition. The speaker's grand search for a bottom is quietly undermined. If the sea is tedious, so is the idea of sounding it forever. The wren seems to know this, and the speaker has no reply.
The final couplet turns on the small word "but": "but I have lost myself / in the sand." The speaker's verb has changed from future-minded resolve to the present perfect "have lost". Whatever happened between the stanzas is skipped, and we meet the result. The poem also echoes itself. In line three the speaker resolves to "find", and by line seven he has "lost". Instead of going down into the depths, he has gone into the smallest particles of the shore. One reading is that this is a comic failure, since he wanted the bottom of everything and got lost in grains. Another is that it is a kind of release, because losing the self might be the only honest way to reach the bottom of what is possible. The poem does not choose between them.
The form supports this. There are four unrhymed couplets, with no capital letters except the lone "I" and no punctuation apart from the apostrophe in "sea's". Nothing is closed off with a full stop, so the ending feels open, like a tide that hasn't finished going out. The rhythm is worth counting. The first couplet runs at five syllables per line, steady and easy. The ambitious line, "the bottom of the possible", swells to about eight. After that the lines shrink, and the poem ends on "in the sand", three plain syllables. It is as if the speaker's confidence dissolves along with the line length.
What makes the poem significant is how much it fits into so little space. In eight short lines it touches ambition, the limits of knowledge and the pull of self-dissolution, without ever sounding pompous, because the humour of the bored wren keeps it honest. It is also a poem about the gap between what we announce and what actually happens to us, which anyone who has made a big resolution in the heat of a moment will recognise. The reader is left on the sand beside the speaker, unsure whether to laugh, sympathise or envy him.