I light up the dark without heat, dancing unseen across an empty void. What am I?

Category: Brain · Difficulty: medium

Hint: Look towards tiny creatures shining in the sea

Answer

Bioluminescent plankton glow

Explanation

Some plankton emit light naturally, illuminating dark waters without warmth

This is a medium brain riddle — a moderate challenge for most people. The answer is Bioluminescent plankton glow.

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