Spoiler alert: This post is part of an in-depth discussion of Perelandra by C. S. Lewis, which will inevitably reveal key plot points. You may well have a lot of reading ahead of you.
Late again! My fault, this time. Sorry.
Ransom has been sent on a space voyage to Perelandra, Venus in our language, by Oyarsa, the spiritual being that rules Malacandra, or Mars. He was propelled through space by supernatural means in a translucent casket. When he landed on Venus, the casket dissolved and he was left afloat in the ocean that apparently covered Perelandra, where the climate is warm and perpetually overcast with golden clouds. Soon he discovered the several large floating mats of vegetation that act as land on Perelandra. Climbing onto one, he found some food, consisting of some delicious golden gourds, and then he slept.
When Ransom awakens, he continues exploring. He finds a grove of the golden fruit, and for the first time discovers animal life: a red dragon-like creature, which appears friendly but not intelligent. Some large flowers whose stalks accumulate bubbles of water serve as an impromptu perfumed shower. He also finds some large berries for food that taste very good and satisfy his hunger, but as with the golden fruit the previous day, he feels an impulse not to overindulge.
As Ransom explores, the dragon (which has been making a nuisance of itself in the meantime) zooms past him and flies to another island floating about half a mile away. He sees that the air and the oceans are teeming with life, and it’s all heading in that direction. In particular, he sees a pod of dolphin-like fish, and on the back of one, a human figure. He gets the being’s attention, and he sees that the figure is a green-skinned woman—who, evidently, was expecting someone else.