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A sea that glows

PHOTO: AP

Where do you think the light in this picture is coming from?

Some of the light is coming from the moon. But a lot of the light is coming from an unusual place: plants.

Usually, plants take in light to make food. The light on the trees is coming from plants that make their own light. Behind the trees you can the Salton Sea, a sea in California (加州). The Salton Sea is glowing too. The Salton Sea is full of algae, which is a very simple type of plant.

The algae in the Salton Sea gives off energy which makes the water glow. Even though this picture is pretty, algae is very bad for the birds and fish that live there.

Do you know? HARD TO SAY There are many kinds of algae. Most kinds of algae are a lot like plants, but algae have no leaves, roots or flowers. Scientists say that some kinds of algae are different from plants, and are more like an animal. Algae can live in the sea or on land.

The words of the day glow v.i. 發光 (fa1 guang1) Even at night, my bedroom is not totally dark because my pyjamas glow in the dark. 即使在夜晚，我的臥室不會完全黑壓壓的。因為我的睡衣會發光。 simple adj. 簡單的 (jian3 dan1 de5)

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