Read the selection, then answer the questions.
The following selection is an excerpt from a chapter of Rachel Carson’s book "The Sea Around Us". As you read, notice how the author uses literary language to emphasize her theme in this nonfiction essay. When you have finished reading, answer the questions that follow.
The Changing Year
by Rachel Carson
“Thus with the Year Seasons return.”
—Milton
Autumn comes to the sea with a fresh blaze of phosphorescence, when every wave crest is aflame. Here and there the whole surface may glow with sheets of cold fire, while below schools of fish pour through the water like molten metal. Often the autumnal phosphorescence is caused by a fall flowering of the dinoflagellates*, multiplying furiously in a short-lived repetition of their vernal blooming.
Sometimes the meaning of the glowing water is ominous. Off the Pacific coast of
North America, it may mean that the sea is filled with the dinoflagellate Gonyaulax, a
minute plant that contains a poison of strange and terrible virulence. About four days
after Gonyaulax comes to dominate the coastal plankton, some of the fishes and shellfish in the vicinity become toxic. This is because, in their normal feeding, they have strained the poisonous plankton out of the water. Mussels accumulate the Gonyaulax toxins in their livers, and the toxins react on the human nervous system with an effect similar to that of strychnine. Because of these facts, it is generally understood along the Pacific coast that it is unwise to eat shellfish taken from coasts exposed to the open sea where Gonyaulax may be abundant, in summer or early fall. For generations before the white men came, the Indians knew this. As soon as the red streaks appeared in the sea and the waves began to flicker at night with the mysterious blue-green fires, the tribal leaders forbade the taking of mussels until these warning signals should have passed. They even set guards at intervals along the beaches to warn inlanders who might come down for shellfish and be unable to read the language of the sea.
But usually the blaze and glitter of the sea, whatever its meaning for those who
produce it, implies no menace to man. Seen from the deck of a vessel in open ocean, a tiny, man-made observation point in the vast world of sea and sky, it has an eerie and unearthly quality. Man, in his vanity, subconsciously attributes a human origin to any light not of moon or stars or sun. Lights on the shore, lights moving over the water, mean lights kindled and controlled by other men, serving purposes understandable to the human mind. Yet here are lights that flash and fade away, lights that come and go for reasons meaningless to man, lights that have been doing this very thing over the eons of time in which there were no men to stir in vague disquiet.
*dinoflagellates – algae-type marine organisms