The speaker mourns that "Its webs of living gauze no more unfurl; / Wrecked is the ship of pearl!"  
The speaker thanks the title object for the "heavenly message brought by thee, / Child of the wandering sea," and comments "Through the deep caves of thought I hear a voice that sings."  The speaker mourns that "Its webs of living gauze no more unfurl; / Wrecked is the ship of pearl!"  Later, the speaker rejoices that "From thy dead lips a clearer note is born / Than ever Triton blew from wreath? horn!"  Containing the famous line "Build thee more stately mansions, O my soul," FTP, identify this famous poem about a seashell by Oliver Wendell Holmes, Sr.
The speaker thanks the title object for the "heavenly message brought by thee, / Child of the wandering sea," and comments "Through the deep caves of thought I hear a voice that sings."  
The Chambered Nautilus