Read the excerpt from "the great wave: hokusai." it is because the sea is blue, because fuji is blue, because the bent blue men have white faces, like the snow on fuji, like the crest of the wave in the sky the color of their boats. it is because the air is full of writing, because the wave is still: that nothing will harm these frail strangers, that high over fuji in an earthcolored sky the fingers will not fall; and the blue men lean on the sea like snow, and the wave like a mountain leans against the sky. the main subject of the poem is the relationship between and man.

 It is because the sea is blue, Because Fuji is blue, because the bent blue Men have white faces, like the snow On Fuji, like the crest of the wave in the sky the color of their Boats. It is because the air Is full of writing, because the wave is still: that nothing Will harm these frail strangers, That high over Fuji in an earth colored sky the fingers Will not fall; and the blue men Lean on the sea like snow, and the wave like a mountain leans Against the sky. The main subject of the poem is the relationship between the sea and man. The several references to waves and them offering no harm to the strangers indicates a good relationship between the two.

Walked would be the participle here. as it is a verb ending in -ed.