Science Nugget: 2⚛

Rhythmically retreating tides reveal rocky seaside pools teeming with anemones, hermit crabs, snails, small fish, and even octopuses. Temporarily cut off from the rest of the sea, the pools are rich in nutrients delivered during high tide, allowing many of the inhabitants a permanent home. But pounding waves, varying levels of salinity and oxygen, and scorching sunlight that hikes tide-pool temperatures require adaptations such as the ability to cling to rocks or breathe surface air.

‘Wait! So is this a hypothesis, a theory, or a fact?’

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