Examples of using "Korallen" in a sentence and their english translations:
The corals glow.
So corals have an intriguing defense.
Corals can live for thousands of years.
By night, even corals show a dark side.
And it's not just corals that glow. All sorts of reef creatures fluoresce.
During the day, algae that live inside the corals turn the sun's energy into food.