"Sea Fever" by John Masefield is a poem about the speaker's love for the sea and his desire to venture out and explore it. The theme of the poem is the allure and call of the sea.
Lines 5 and 6 of "Sea Fever" are: "And all I ask is a windy day with the white clouds flying, / And the flung spray and the blown spume, and the sea-gulls crying." These lines support the theme of the poem by emphasizing the speaker's desire to be out on the water, experiencing the wind and the waves firsthand.
The detail of the "white clouds flying" suggests the movement and freedom that the speaker craves. The phrase "flung spray and blown spume" evoke the power and excitment of the sea, while the "sea-gulls crying" add a sense of wildness and natural beauty to the scene. These details support the theme of the poem by helping to paint a vivid picture of the sea that the speaker longs for.