Why do sharks bleed when out of water?

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asked Oct 2, 2022 in Fish by Dizzydyle (2,240 points)
Why do sharks bleed when out of water?

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answered Oct 2, 2022 by thefenderfelloff (2,670 points)
Sharks will bleed when out of water because they cannot breathe and so they are trying to get some oxygen.

The water also lubricates the sharks gills and when they are trying to breathe out of water the sharks gills and skin are dry which causes friction and can lead to bleeding.

Also if a shark is out of water or is stuck in something and trying to break free blood will begin to pour from the sharks gills as the gills tear open while the shark is attempting to escape.

Some species of sharks will sleep as they swim and other sharks will lay stationary on the seafloor to sleep and some other types of sharks will snuggle up in groups or someplace out of sight where it's safe for them to sleep and get some rest which can be in a cave or in sand.

Sharks do poop and the shark's poop comes out via the cloaca.

Sharks do also pee and they pee and urinate continuously.

When sharks pee the sharks urine is actually absorbed by the sharks flesh, where the urea is used to keep the sharks scale-like dermal denticles nice and moist.

The rest of the sharks urine is simply expelled back into the water through their 'skin'.

Sharks mate through use of the male sharks claspers that have extensions of their pelvic fins that release sperm into the female shark.

All male sharks have what are called claspers which are extensions of the sharks pelvic fins that are used to transfer sperm into the female shark.

Once inserted, the male expels sperm into the female along with seawater, and the eggs are fertilized inside the female's body.

Some sharks are egg-laying, while others are live-bearing.

Some sharks can live 300 years and even some sharks such as the Greenland Shark can live 400 to 500 years.

Some sharks can live up to 500 years.

The Greenland Shark lives on average of 300 to 400 years although in some cases the Greenland Shark can live up to 500 years.

The Greenland Shark is the kind of shark that lives the longest with an average lifespan of around 400 years.

The Greenland shark, also known as the gurry shark, grey shark, or by the Kalaallisut name eqalussuaq, is a large shark of the family Somniosidae, closely related to the Pacific and southern sleeper sharks.

Sharks do die of old age just like other animals and humans.

Sharks age faster than humans but a shark can live for up to 30 years although around 30 years of age a shark is considered to be around 85 to 90 years old in human years.

Sharks live for between 20 to 30 years.

The lifespan of a shark is 20 to 30 years although some sharks may live a bit longer than 30 years.

The shark or sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head.

Modern sharks are classified within the clade Selachimorpha and are the sister group to the rays.

Despite their scary reputation, sharks rarely ever attack humans and would much rather feed on fish and marine mammals.

Sharks are opportunistic feeders, but most sharks primarily feed on smaller fish and invertebrates.

Some of the larger shark species prey on seals, sea lions, and other marine mammals.

Whale sharks are essentially bulletproof, with six-inch-thick skin.

Though it's not the thickest in the animal world (sperm whales have skin measuring more than a foot thick), but it's tough enough that it's made it extremely difficult for scientists to get a blood sample of the creature.

Sharks are not blind, even though many people thought they were, or that they had very poor eyesight.

Sharks are color blind, but they can still see quite well.

Some sharks must swim constantly in order to keep oxygen-rich water flowing over their gills, but others are able to pass water through their respiratory system by a pumping motion of their pharynx.

This allows them to rest on the sea floor and still breathe.

Some sharks such as the nurse shark have spiracles that force water across their gills allowing for stationary rest.

Sharks do not sleep like humans do, but instead have active and restful periods.

Many scientists now believe that great white sharks are intelligent , highly inquisitive creatures.

Its prey, including seals and dolphins, are very clever animals, and the shark has to have enough brains to outsmart them.

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