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Questions and Answers
Which type of animals are most active at dawn and dusk?
Which of the following is a unique feature of cetacean sleep?
What is the unique sleeping pattern exhibited by dolphins?
How do dolphins and whales sleep differently from most other animals?
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What is the reason why dolphins and whales exhibit unihemispheric sleep?
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How much sleep does each side of a dolphin's brain get per 24-hour period?
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Study Notes
- Diurnal animals are active during the day, while nocturnal animals are active at night.
- Crepuscular animals are most active at dawn and dusk.
- Dolphins and whales sleep uniquely due to their need to come to the surface of the water to breathe.
- Dolphins exhibit unihemispheric sleep, where only one brain hemisphere at a time enters deep sleep while the other hemisphere remains conscious.
- Each side of a dolphin's brain gets about 4 hours of sleep per 24-hour period.
- Most other animals are unconscious during sleep.
- Cetaceans, such as dolphins and whales, also sleep.
- Unihemispheric sleep is a unique feature of cetacean sleep.
- Dolphins and whales must come to the surface of the water to breathe.
- Dolphins and whales show unihemispheric sleep, with each side of the brain getting about 4 hours of sleep per day.
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