GREEN, MEAN, AND UNSEEN

Coral reefs are underwater cities built by tiny overachievers.

✗ FAKE

Coral reefs are built by coral polyps, tiny animals that secrete calcium carbonate skeletons. Reefs support huge biodiversity, and they are not cities.

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Penguins slide on ice because walking is for beginners.Geckos can stick to surfaces using tiny hair-like structures on their feet. Gravity negotiable.Venus flytrap can snap shut in less than a second. Patience, then violence.Octopuses have eight arms so they can multitask: escape, snack, judge you, and still look elegant.Hedgehogs curl up because they’re tired of being perceived.Dolphins are playful because they never read the room.See all Green, Mean, and Unseen facts →

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