I build homes from mineral dust, host vibrant colors on my back, and move slowly but surely through the ocean's depths. What am I?

Category: Animal · Difficulty: hard

Hint: Focus on creatures that interact with mineral deposits and vibrant marine life.

Answer

A giant clam with symbionts

Explanation

Giant clams incorporate minerals to build their shells and host algae whose colors decorate their surface, unlike turtles or starfish that do not build mineral homes.

This is a hard animal riddle — a tricky one that takes a little thought. The answer is A giant clam with symbionts.

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