The threat of sharks is an obvious thing for people heading towards the beach in summer. It also highlighted sharks’ penchant for being activated directly by environmental light, with energetic behavior in the dark and sedentary behavior in the light. In this regard, certain investigations conducted in a controlled environment revealed that shark species such as the Horn shark went into activity mode as soon as the lights were turned off and stopped once the lights were turned back on. However, scientists have observed that most sharks tend to remain sluggish throughout the day while actively swimming at night. But can it be asserted that all sharks sleep at night like most living beings?Īctually, the reality is different because some studies on sharks have asserted that these fishes are nocturnal, i.e. Sharks do not have any particular sleep cycle. Instead, these fishes prefer to sleep or rest when their instinct asks them to. That said, sharks do not follow the general circadian rhythms, which involve sleeping at night and being awake during the daytime. In fact, in some shark species, like the hammerheads, it has been found that they spend their daytime sluggishly while hunting activity during the nighttime. The night is the resting time for most living organisms on earth.īut the night is not a specific sleeping or resting time for sharks. We humans and most other animals and birds prefer sleeping at night. Hence, let’s start our journey! Do sharks sleep at night? As a result, we are certain that you will have a better grasp of these powerful and smirking ocean predators by the end of it. This is a non-fiction article written to inform people about sharks. And we’ve covered all of them in this article. There are many other intriguing facts about sharks’ sleeping habits and locations. Image Credit: White-Tipped Fin by LASZLO ILYES ( CC BY 2.0 ) from Wikimedia
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