"After the Sea-Ship"
Free verse poetry with no specific form. Free verses may occasionally have a specific format, but not traditionally. Since there is no form, that leaves room for many different kinds of free verse poems from poet to poet. The earliest free verse on record was King James' translation of the Psalms. Free verse poems are a widely used form of poetry and is one of the most well known.
After the Sea-Ship by Walt Whitman
After the Sea-Ship—after the whistling winds;
After the white-gray sails, taut to their spars and ropes,
Below, a myriad, myriad waves, hastening, lifting up their necks,
Tending in ceaseless flow toward the track of the ship.