Spin the wheel with this sleep-themed random student selector tool 🌀 - You won't get tired of using it!

😴 Fun fact: Dolphins and some species of whales and seals engage in a behaviour known as "unihemispheric slow-wave sleep," which means that only one half of their brain sleeps at a time. The other half stays awake, allowing them to maintain enough consciousness to breathe and to watch for potential predators. This unique sleeping method is essential for their survival, as it enables them to be partly alert while still getting the rest they need. This remarkable adaptation demonstrates the diverse and fascinating ways different species have evolved to meet their basic needs.

For more themes to use before bedtime, click here (there are 50 in total!)