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  2. Sleep in fish - Wikipedia

    en.wikipedia.org/wiki/Sleep_in_fish

    However, other fish do seem to sleep, especially when purely behavioral criteria are used to define sleep. For example, zebrafish , [ 6 ] tilapia , [ 7 ] tench , [ 8 ] brown bullhead , [ 9 ] and swell shark [ 10 ] become motionless and unresponsive at night (or by day, in the case of the swell shark); Spanish hogfish and blue-headed wrasse can ...

  3. Sleep in animals - Wikipedia

    en.wikipedia.org/wiki/Sleep_in_animals

    Sleep can follow a physiological or behavioral definition. In the physiological sense, sleep is a state characterized by reversible unconsciousness, special brainwave patterns, sporadic eye movement, loss of muscle tone (possibly with some exceptions; see below regarding the sleep of birds and of aquatic mammals), and a compensatory increase following deprivation of the state, this last known ...

  4. Sleeping fish? From sharks to salmon, guppies to groupers ...

    www.aol.com/news/sleeping-fish-sharks-salmon...

    A large group of yellowfin tuna swimming off the coast of Italy. Like all fish, they sleep, but it's not like human sleep. Giordano Cipriani/The Image Bank via Getty Images Curious Kids is a ...

  5. Port Jackson shark - Wikipedia

    en.wikipedia.org/wiki/Port_Jackson_shark

    The Port Jackson shark is a nocturnal species which peaks in activity during the late evening hours before midnight and decreases in activity before sunrise. [2] A study showed that captive and wild individuals displayed similar movement patterns and the sharks' movements were affected by time of day, sex, and sex-specific migrational behaviour.

  6. Scyliorhinidae - Wikipedia

    en.wikipedia.org/wiki/Scyliorhinidae

    Due to being nocturnal, some species sleep close together in crevices throughout the day and then go hunting at night. [13] Some species such as the small spotted catshark, Scyliorhinus canicula , are sexually monomorphic and exhibit habitat segregation, where males and females live in separate areas; males tend to live in open seabeds, while ...

  7. List of nocturnal animals - Wikipedia

    en.wikipedia.org/wiki/List_of_nocturnal_animals

    Diurnality, plant or animal behavior characterized by activity during the day and sleeping at night. Cathemeral, a classification of organisms with sporadic and random intervals of activity during the day or night. Matutinal, a classification of organisms that are only or primarily active in the pre-dawn hours or early night.

  8. Today's Wordle Hint, Answer for #1270 on Tuesday, December 10 ...

    www.aol.com/todays-wordle-hint-answer-1270...

    SPOILERS BELOW—do not scroll any further if you don't want the answer revealed. The New York Times. Today's Wordle Answer for #1270 on Tuesday, December 10, 2024.

  9. Southern sleeper shark - Wikipedia

    en.wikipedia.org/wiki/Southern_sleeper_shark

    The southern sleeper shark feeds primarily on cephalopods, especially squid — including the giant and colossal squids — and numerous fishes.Documented stomach contents of individual sleeper sharks have also, albeit infrequently, contained the remains of marine mammals or seabirds, possibly as a result of scavenging on sunken carcasses or whale falls. [1]