To date, there's only one species that has been called '
Regenerating flatworms
This apparently limitless regeneration also applies to aging and damaged tissue, allowing the worms to cheat death indefinitely, according to a study at the University of Nottingham.
Well, one species of animal is actually immortal! Immortality means 'eternal life', which is the ability to live forever! The turritopsis dohrnii is a species of jellyfish found in the Mediterranean Sea and around Japan and has been nicknamed the 'immortal jellyfish'…
It has been dubbed the immortal jellyfish. When the medusa of this species is physically damaged or experiences stresses such as starvation, instead of dying it shrinks in on itself, reabsorbing its tentacles and losing the ability to swim. It then settles on the seafloor as a blob-like cyst.
When the medusa the immortal jellyfish (Turritopsis dohrnii) dies, it sinks to the ocean floor and begins to decay. Amazingly, its cells then reaggregate, not into a new medusa, but into polyps, and from these polyps emerge new jellyfish. The jellyfish has skipped to an earlier life stage to begin again.
The 'immortal' jellyfish, Turritopsis dohrnii
To date, there's only one species that has been called 'biologically immortal': the jellyfish Turritopsis dohrnii. These small, transparent animals hang out in oceans around the world and can turn back time by reverting to an earlier stage of their life cycle.
Jellyfish stings in Australia can cause pain, paralysis and death for swimmers with exposed skin. Numerous venomous species of jellyfish occur in Australian waters, including the box jellyfish and Irukandji Jellyfish. Box jellyfish are believed to have caused at least 69 deaths since record keeping began in 1883.
Of those that do exist, the oldest-known jellyfish fossils, found in Utah, date to 505 million years ago and have enough detail to show clear relationships with some modern species of jellyfish.
Lobsters certainly do not live forever. It's not entirely clear where this myth originated, but it is a claim that persists online, often in the form of memes. While some animals, given the right circumstances, could be considered immortal, lobsters are not among them.
Lacking brains, blood, or even hearts, jellyfish are pretty simple critters. They are composed of three layers: an outer layer, called the epidermis; a middle layer made of a thick, elastic, jelly-like substance called mesoglea; and an inner layer, called the gastrodermis.
According to Hindu mythology, a soul never dies; it is body which dies and immediately after death, soul changes body as we change clothes.
While, as shown with creatures such as hydra and Planarian worms, it is indeed possible for a creature to be biologically immortal, these are animals which are physiologically very different from humans, and it is not known if something comparable will ever be possible for humans.
There are also numerous animals with no hearts at all, including starfish, sea cucumbers and coral. Jellyfish can grow quite large, but they also don't have hearts. Or brains.
Snails have more teeth than any animal.
This is TRUE. A snail's mouth is no larger than the head of a pin, but can have over 25,000 teeth (but these aren't like regular teeth, they are on its tongue).
Flatworms, nematodes, and cnidarians (jellyfish, sea anemones, and corals) do not have a circulatory system and thus do not have blood.
Hippopotamus gives the milk of blue color. Blue milk, also known as Bantha milk, was a rich blue-colored milk produced by female banthas.
Why Do People Cook Lobsters Alive? Boiling lobsters alive is a way to reduce the risk of food poisoning from bacteria that live in their flesh and that quickly multiply on their carcasses, according to Science Focus. Plus they have been deemed tastier and better presented on the plate when cooked this way.
Research has clearly shown that lobsters, crabs, and other crustaceans can and do experience pain. Scientists have shown that their reaction to painful stimuli is more than just a reflex response and instead, they learn from painful stimuli and change their behavior.
What to do if your lobster dies. Should they die and you've kept them cold, you can still cook them. According to State of Maine food safety experts, dead lobster can be consumed safely up to 24 hours from time of death, if refrigerated properly at or below 38°F (the temperature of the average home refrigerator).
Fossils suggest that, horseshoe crabs have barely changed in appearance since the Triassic period 230 million years ago (mya), and scientists know of older related species. The oldest fossil discovered so far dates back 445 million years.
The longest-lived animal ever discovered is a quahog clam, estimated to be 507 years old. It had been living on the seabed off the north coast of Iceland until it was scooped up by researchers in 2006 as part of a climate change study.
Wild species can live anywhere from a few days to decades. One species in particular, dubbed the 'Immortal Jellyfish' (Turritopsis dohrnii) may actually live forever. This jellyfish is more likely to die at the hands (or mouth) of a turtle or fish, than from old age.
The tentacles of the jellyfish have tiny stingers called nematocysts which can detach, stick to skin, and release venom. Even if the jellyfish is dead, it can still sting you because the cell structure of nematocysts is maintained long after death.
These famous jellies are known for stinging and badly injuring or killing unsuspecting divers and snorkelers. While these nasty cnidarians do cause chaos, Australia is home to multiple amazing species of jellyfish that rarely sting but often amaze divers.
Never touch a jellyfish that's washed up on shore. Dead jellyfish still have venom in their tentacles that can sting on contact.