Often beneath the wave, wide from this ledge
The dice of drowned men's bones he saw bequeath
An embassy. Their numbers as he watched,
Beat on the dusty shore and were obscured.
And wrecks passed without sound of bells,
The calyx of death's bounty giving back
A scattered chapter, livid hieroglyph,
The portent wound in corridors of shells.
Then in the circuit calm of one vast coil,
Its lashings charmed and malice reconciled,
Frosted eyes there were that lifted altars;
And silent answers crept across the stars.
Another whirlpool image. This stanza evokes the close of  Moby-Dick , in which all the sailors of the  Pequod  (Ishmael excepted) sink in the vortex of the sea. 

At Melvilles Tomb