Photosynthesis

i am lunar, i am tides
i can't help the way i ravage seashores

you are solar, you are periodic and predictable
perhaps concealed by cloud, by storm
but still there, steady, waiting

i rise and writhe, i disappear and shine
i am phases, i am reflected photons
i rule the night, dwarf further stars

and sometimes, just sometimes
i am faded and soft and white in your day
demanding your light
and distracting your photosynthesis