Well, scientists guess that even the biggest Megalodon only reached a mere 58 feet (18 meters) (though some argue it was up to 82 feet [25 meters]). By contrast, the largest blue whales clock in at a little more than 100 feet (30 meters) long, and on average are between 75-90 feet (23-27 meters) in length.
While there might never be a larger animal than the blue whale, there are other kinds of organism that dwarf it. The largest of them all, dubbed the “humongous fungus”, is a honey mushroom (Armillaria ostoyae).
The adult sperm whale brain is 8,000 cubic centimeters. Our brain is about 1300 cubic centimeters.
They weigh somewhere between 100-150 tons (200,000-300,000 pounds/90,700-136,000 kilograms) as adults. Keep this in mind, the African bush elephant, the largest living land animal, only weighs 7 tons (14,000 pounds/63,000 kilograms). So an adult blue whale can weigh as much as 14-21 adult African elephants.
How big is a blue whale calf at birth?
Female: 25 mNorthern hemisphere population, Adult
Male: 24 mNorthern hemisphere population, Adult
Okay, so whale sharks won't swallow you. They do sometimes swallow prey whole, so you could fit down their esophagus. Sperm whales sometimes swallow squid whole, so it could definitely manage a human. In fact, there's a story of a sailor being swallowed by a sperm whale off the Falkland Islands in the early 1900s.
A new study suggests that a tsunami of cosmic energy from a supernova killed off large ocean animals – including the huge megalodon shark – 2.6 million years ago. A shower of particles may have spelled curtains for the megalodon, a school-bus-sized shark, 2.6 million years ago.
The Most Dangerous Extinct Animals
- Megalodon. A prehistoric Shark that was identical to the modern Great White except that it was possibly 60 feet long (over twice the size of a modern Orca) and close to 65 short tons in weight.
- Haast's Eagle.
- Andrewsarchus.
- Titanoboa.
- Spinosaurus.
- Predator X.
- Terror Birds.
- Gigantopithicus.
8 freaky-looking prehistoric animals that still exist today
- Horseshoe crab: 540 million years old.
- Nautiluses: 500 million years old.
- Tadpole shrimp: 250 million years old.
- Ctenophores: 700 million years old.
- Coelacanth: 360 million years old.
- Elephant sharks: 420 million years old.
- Turtles: 250 million years old.
- Colossal squid.
The spiral Siphonophore spotted by the team of scientists aboard the Schmidt Ocean Institute's Falkor research vessel has been estimated to be 150-feet-long, which is an approximate 50 feet longer than a blue whale - widely held to be the largest animal to have ever existed.
Prehistoric Creatures That Are Still Alive TodayBut that doesn't mean you're out of luck in seeing prehistoric animals today. There are still plenty of wildlife species that predate recorded history, and they even exist as they did when roaming with our loincloth-clad ancestors.
Taking a fresh look at the fossil record, researchers are now proposing that this mega marine creature may have been killed off by none other than the modern great white shark (Carcharodon carcharias). The timing is everything.
The Mosasaurus had a long, thin body with jaws designed more for feeding on smaller prey such as ammonites and fish. A Mosasaurus would not have been able to get its jaws around the much thicker body of the Megalodon. It would just take one catastrophic bite for the Megalodon to end the battle.
NO. The Meg is extinct and the Blue Whale is not..
A blue whale can be over three times more massive than even the largest Megalodon and maybe 5 or more times more massive than an average one. Even a small blue whale would be twice the mass of a small Meg.
Megalodons were wiped out when killer whales invaded: Competition for food drove 60ft sharks to extinction 2 million years ago.
Mature megalodons likely did not have any predators, but newly birthed and juvenile individuals may have been vulnerable to other large predatory sharks, such as great hammerhead sharks (Sphyrna mokarran), whose ranges and nurseries are thought to have overlapped with those of megalodon from the end of the Miocene and
After the dinosaurs went extinct, 65 million years ago, the biggest animals on earth were confined to the world's oceans—as witness the 50-foot-long, 50-ton prehistoric sperm whale Leviathan (also known as Livyatan) and the 50-foot-long, 50-ton Megalodon, by far the biggest shark that ever lived.
The largest Mosasaurus was probably slightly longer but considerably lighter than megalodon. Mosasaurs reached about 16 meters in length; megalodon reached maybe 16 or 17. However, megalodon probably attained 50 tonnes or so; mosasaurs could only get to about six.
Later Jewish sources describe Leviathan as a dragon who lives over the sources of the Deep and who, along with the male land-monster Behemoth, will be served up to the righteous at the end of time.
In the Old Testament, Leviathan appears in Psalms 74:14 as a multiheaded sea serpent that is killed by God and given as food to the Hebrews in the wilderness. In Isaiah 27:1, Leviathan is a serpent and a symbol of Israel's enemies, who will be slain by God.
Sperm whales are named after the spermaceti – a waxy substance that was used in oil lamps and candles – found on their heads.
The whale was named after the original Hebrew word for a mythical sea monster -- Livyatan -- and Herman Melville, the author of the novel Moby Dick. The remains of the Leviathan Melvillei will remain in Peru at the Museo de Historia Natural in Lima.
Livyatan is an extinct genus of sperm whale containing one species: L. melvillei. The genus name was inspired by the biblical sea monster Leviathan, and the species name by Herman Melville, the author of the famous book Moby-Dick about a white bull sperm whale.
Livyatan melvillei, named after the Biblical sea monster and the author of Moby Dickauthor of Moby Dick, was a giant sperm whale that has just been discovered by Belgian scientist Olivier Lambert.
The fossil, dated at 12–13 million years old, belongs to a new, but extinct, genus and species described in Nature today1. Named Leviathan melvillei, it probably hunted baleen whales. Conversely, Leviathan had massive teeth in both its upper and lower jaws, and a skull that supported large jaw muscles.
The very ancient ancestors of modern whales and dolphins, or cetaceans, were land-living carnivores that entered the seas around 50 million years ago, slowly losing their legs through evolution and adapting to an ocean-going way of life. (See the oldest known whale from Antarctica, which lived 49 million years ago.)
