The compass improved navigation at sea.
Fact #1551
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The Earth's tilt causes seasonal changes.
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Certain whales migrate thousands of miles annually.
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Some whales sing songs that travel hundreds of miles underwater.
Fact #381 · Ocean
Some deep‑sea fish create their own light.
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Dolphins use echolocation to navigate and hunt underwater.
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The giant amphipod thrives in extreme ocean depths.
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Certain dolphins cooperate to herd fish in coordinated groups.
Fact #1301 · Ocean
Some dolphins cooperate to herd fish while hunting.
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