No other marine mammal sleeps in water quite like seals, thanks to unique adaptations that keep them safe and breathing—discover how they do it.
How Seals Sleep in Water Without Drowning
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Aquatic Sleep
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Fish “Sleep‑Swimming” Phenomenon Filmed for First Time
Fish sleep-swimming filmed for the first time reveals surprising behaviors that could change our understanding of aquatic rest and alertness.
Do Fish Sleep? Fun Facts About Fish Behavior
Learn fascinating facts about fish sleep behavior and discover how these aquatic creatures stay safe while resting.
