follow.

"When she came again to the surface, fifteen minutes later, the monster
and all her spouting kinsfolk were out of sight, hidden behind a
mile-long mountain of blue ice-berg. But she was not satisfied.
Remaining up less than two minutes, to give the calf time for breath,
she hurriedly plunged again and continued her journey. When this
manoeuver had been repeated half a dozen times she began to feel more
at ease. At last she came to a halt, and lay rocking in the seas just
off the mouth of a spacious rock-rimmed bay.

"Here, as luck would have it, she found herself in the midst of the
food which she loved best. The leaden green of the swells was all
flushed and stained with pale pink. This unusual color was caused by
hordes of tiny, shrimplike creatures--distant cousins of those which
you like so well in a salad. The whale preferred them in the form of
soup, so she went sailing slowly through them with her cavernous mouth
very wide open. Every now and then she would shut her jaws and give
two or three great gulps, and her little eyes, away back at the base of
her skull, would almost twinkle with satisfaction.

"But, as it appeared, she was not the only one that liked shrimps. The
air was full of wings and screams, where gulls, gannets, and skuas
swooped and splashed, quarrelling because they got in one another's way
at the feast. Also, here and there a heavy, sucking swirl on the
smooth slope of a wave would show where some very big fish was taking
toll of the pinky swarms. The whale kept her eye on these ponderous
swirls with a certain amount of suspicion, though not really
anticipating any danger here.