Multiple choice general knowledge

Dolphins can swim and sleep at the same time.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Dolphins have unihemispheric slow-wave sleep, meaning they sleep with one half of their brain at a time while the other half remains awake. This adaptation allows them to continue swimming, surfacing for air, and monitoring for predators even while resting. If they slept like humans, they would drown.

Keep practicing — related questions