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"All forms of life, including humans, animals, and plants, certainly need time to rest. However, the methods of resting can differ among various creatures. While humans and most land animals sleep with their eyes closed, fish have a completely unique way of sleeping. Here are some interesting facts about fish that sleep with their eyes open!"
According to information from Sleep Advisor, it states that the majority of fish sleep without closing their eyes or in a state of being awake. In addition, when sleeping, they tend to keep moving, although at a slower pace. Of course, there is a reason for this. Almost all fish do not have the ability to close their eyes.
In fact, fish are not even equipped with eyelids, so their eyes remain open at all times. The only exception is sharks, a species of fish that has a membrane with a function similar to that of eyelids.
"Unlike humans who can become complacent while sleeping, fish remain alert when they sleep. This allows fish to stay responsive and evade if there is a sudden attack from a predator."
"When asleep, fish remain active by moving at a slower pace. They tend to hover close to the surface of the water, almost like floating, rather than swimming in the middle of the water column. Sometimes, fish use fin movements to keep the oxygen supply flowing to their gills."
Most fish tend to be active during the day and rest at night, but there are also those that are active at night. Although they generally do not have comfortable hiding places, some species of fish seek out spots to shelter and hide from predators while sleeping.
"Unlike humans, fish do not have a circadian rhythm. They can quickly adjust their sleep patterns to water temperature, food availability, migration patterns, and even situations like being parents caring for their young."
"Source : Sleep Advisor"
The translation of "Apakah ikan bermimpi?" to English is "Do fish dream?"
"Although research on fish dreams is still limited, it is known that fish do not experience the dreaming sleep stage or rapid eye movement (REM). The fish's brain is not very complex, so that could be the reason."
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