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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. Pacific sleeper shark - Wikipedia

    en.wikipedia.org/wiki/Pacific_sleeper_shark

    Pacific sleeper shark carcasses. The Pacific sleeper shark (Somniosus pacificus) is a sleeper shark of the family Somniosidae, measuring up to 4.4 m (14 ft) in length, although it could possibly reach lengths in excess of 7 m (23 ft). [2]

  4. 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 ...

  5. 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 ...

  6. Greenland shark - Wikipedia

    en.wikipedia.org/wiki/Greenland_shark

    Greenland sharks have also been found with remains of moose, polar bear, horse, and reindeer (in one case an entire reindeer body) in their stomachs. [26] [27] [28] The Greenland shark is known to be a scavenger and is attracted by the smell of rotting meat in the water. The sharks have frequently been observed gathering around fishing boats. [26]

  7. Shark bites in Volusia: Why do sharks swim near people? And ...

    www.aol.com/lifestyle/shark-bites-volusia-why...

    Shark bites are common in Volusia County, with blacktips and bull sharks mostly to blame. But the bites are rarely fatal. Here is what we know.

  8. This Swimmer Stays Calm When a Great White Shark Darts Right ...

    www.aol.com/swimmer-stays-calm-great-white...

    Even though great white sharks aren’t known to hunt people, attacks do happen. Four of the 10 fatal attacks in 2023 were done by great white sharks (one in California and three in Australia.)

  9. Somniosidae - Wikipedia

    en.wikipedia.org/wiki/Somniosidae

    The Somniosidae are a family of sharks in the order Squaliformes, commonly known as sleeper sharks. [1] The common name " sleeper shark " comes from their slow swimming, low activity level, and perceived non-aggressive nature.