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Post by OldGreenGrolar on Sept 30, 2021 10:07:54 GMT -5
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Post by OldGreenGrolar on Sept 30, 2021 10:09:10 GMT -5
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Post by OldGreenGrolar on Sept 30, 2021 10:56:05 GMT -5
This is one of my favourite dolphins.
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Post by brobear on Oct 15, 2021 2:50:55 GMT -5
dogdispatch.com/dolphins-rescue-terrified-little-dog-from-drowning-in-a-florida-canal/?fbclid=IwAR2dItYdeMNhEq7ctx9VOqJ_zFAsTTLcA4yVbui9kc1yrUncc-BXKohPubY Dolphins Rescue Terrified Little Dog From Drowning In A Florida Canal. Dolphins are intelligent, curious mammals that have often been credited with coming to the rescue of humans and animals during times of trouble. They are known to be fun loving but also can be protective and unpredictable. There are many stories about dolphins leading ships out of turbulent waters or defending humans from sharks. This dolphin rescue involves a small cinnamon-brown terrier that fell unnoticed into the rough waters of a canal located off Marco Island, Florida. The little dog must have fought to stay afloat when it was noticed by a pod of dolphins. The dolphins swam to the terrified dog and began circling it and making a bunch of noise. The ruckus captured the attention of some people nearby who went to the canal’s edge to see what was going on. Luckily they saw the little dog desperately floating in the water with the dolphins circling it. One of the dolphins was seen nudging the exhausted dog with his nose to help keep it on the water’s surface and another dolphin was seen getting under the dolphin to help it stay afloat. The dolphins seemed to sense what they needed to do to help keep the dog alive and also grab the attention of people who could help rescue the dog from the deep water. The bystanders quickly called the fire department. The firemen that arrived rushed in to rescue the helpless little dog from the rough waters that were surely going to cause it to drown. The firemen provided first aid and estimated that the poor little thing had been in the water for 15 long hours. The lucky dog certainly owes it life to the pod of dolphins that came to its rescue and had the intelligence to ask for help. Not to mention the brave firemen who rushed in to save it.
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Post by brobear on Oct 19, 2021 22:35:47 GMT -5
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Post by brobear on Oct 28, 2021 3:58:19 GMT -5
www.livescience.com/great-white-shark-mistaken-identity Great white sharks can't see a difference between humans and prey. Great white sharks can't see the difference between their typical prey and humans swimming or paddling on surfboards, suggesting some shark attacks are cases of mistaken identity, according to a new study. Researchers filmed seals and humans in water and edited the footage so that it matched the vision of juvenile great white sharks, or white sharks, which pose the greatest risk to human surfers. The researchers found that the shape and motion of humans look the same as seals from a shark's perspective. The study, published Tuesday (Oct. 26) in the Journal of the Royal Society Interface, is the first to test the theory that sharks attack humans because they mistake people for prey. "White sharks are often portrayed as ‘mindless killers’ and ‘fond of human flesh,’ however, this does not seem to be the case, we just look like their food," study lead author Laura Ryan, a neurobiologist and post doctoral researcher at Macquarie University in Australia, told Live Science in an email. Great white sharks (Carcharodon carcharias) are responsible for more human deaths than any other shark species and killed six people in 2020, although the relative risk of humans being bitten by sharks is still extremely low, according to the University of Florida’s International Shark Attack File. These sharks start hunting seals when they are about 8.2 feet (2.5 meters) long. They develop a search image for their prey and combine that with other sensory information, such as smell, to know what to eat. According to Ryan, it’s a learning process that could be prone to mistakes. Great white sharks lack color vision and cannot see fine details like the human eye can. The researchers processed the videos they filmed to reflect how a shark's retina detects the motion and shapes of seals, and compared that motion to humans swimming and paddling on surfboards. This included a longboard surfboard; 9.3 feet by 1.9 feet (2.83 m by 0.58 m), and a shortboard surfboard; 5.8 feet by 1.6 feet (1.77 m by 0.5 m). They concluded that none of the scenarios were visually distinct for a juvenile great white shark swimming below.
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Post by brobear on Oct 31, 2021 2:00:51 GMT -5
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Post by brobear on Oct 31, 2021 13:21:41 GMT -5
www.inverse.com/science/megalodon-off-the-charts?utm_campaign=inverse&utm_content=1601907916&utm_medium=owned&utm_source=facebook&fbclid=IwAR28sx-wefaVwyynz-fbKFm6y7fMQOktoKV4ICm64ufGiiLJgfl2E4cBHe0 LIKE A LOT OF PREHISTORIC REAL-LIFE MONSTERS, the Megalodon shark was a cut above. The extinct shark species, Otodus megalodon, is part of the extinct group of megatooth sharks. It's considered to be the largest shark (and fish) to have ever lived. Because of its size and apparent ferocity, it has also captured human imagination, with its legacy honored in pop culture, like the 2018 movie The Meg, in which Jason Statham battled the mighty creature. CORRECTING THE RECORD — The new research also helps to set the record straight, researchers say — both in science and pop culture. While we can expect depictions like The Meg to be a bit theatrical, some scientific estimates of the shark's size have been "unnecessarily inflated," too, Shimada says. Anecdotal accounts have claimed the existence of a 59-foot Megalodon, for instance. Shimada's team found evidence to suggest that's not possible. But don't let that detract from Megalodon's unique achievement among sharks. "Although the scientifically justifiable maximum length estimates at present are in the range of 14.1-15.3 meters (46-50 feet) including the new study, it is still an impressively large shark," Shimada says. He says the new research helps to understand ecology of the past — and perhaps the future. "The fossil record is a window into the evolution of ecosystems, and understanding why species become extinct, and how their rise and demise affected their ecosystem is critical to today's oceans for issues like conservation of organisms, habitat preservation, and sustainable marine natural resources," Shimada says. "Elucidating ecological variables as simple as the body size of organisms, especially carnivores like sharks in our new study, is the first step."
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Post by brobear on Nov 2, 2021 4:16:21 GMT -5
www.smithsonianmag.com/science-nature/giant-sea-lizards-ruled-waves-while-t-rex-roamed-land-180978569/?utm_source=facebook.com&utm_medium=socialmedia&fbclid=IwAR0PEBMSoQ6KEI8l1Sd1_sh36xE9Tvus2RRWjtLOfW5c3iPOcupGnIcv78c Giant Sea Lizards Ruled the Waves While T. Rex Roamed on Land A new fossil discovery shows marine reptiles called mosasaurs lived up until the asteroid impact that killed non-avian dinosaurs. Just as with dinosaurs, the image of mosasaurs paleontologists are putting together differs from the Hollywood version that quickly gained stardom in Jurassic World. The kaiju-sized Hollywood version has munched sharks, pterosaurs, dinosaurs and humans during its on-screen rampages, perhaps staying true to the voracious mosasaur reputation. But aside from being quite a bit smaller, Zietlow says, large mosasaurs—like Mosasaurus and Tylosaurus—had snake-like scales and would have had lips covering their teeth instead of a maw of snaggletoothed chompers. Nevertheless, the living animals must have been just as impressive as their box office counterparts. “Mosasaurs are literally real-life seas monsters,” Zietlow says. “They have a double row of teeth, whale-like flippers, a shark-like tail, beautiful streamlined skulls and are the biggest lizards to ever live. What’s not to love?”
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Post by brobear on Nov 5, 2021 7:22:34 GMT -5
happinessforever.net/this-baby-orca-was-stuck-and-crying-for-hours-a-group-of-strangers-saves-him/?fbclid=IwAR2_qQbhhp8JQKR-Hc1BISDSuj7qPxdGhIP3AQpgMjDFdVy31ombYY7H02A This baby orca was stuck and crying for hours. A group of strangers saves him. Orca whales are some pretty impressive creatures, right? These sea mammals are the largest member of the dolphin family. They are also extremely intelligent and adaptable, and they can even communicate with each another in order to hunt more effectively. It’s needless to say that they are not exactly the friendliest of animals. Generally speaking, it’s best for humans if they don’t get too close to them. However, when they spotted an orca in desperate need of help, the people in the video below decided to get close and help the poor creature. The incident occurred off the coast of British Columbia. The orca got stranded on a series of rocks while he was trying to get some food. Fortunately for him, a few people learned about him just in time and they all rushed to save him. But everyone knew it’s going to be a pretty tough rescue!
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Post by brobear on Nov 22, 2021 11:46:32 GMT -5
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Post by brobear on Nov 29, 2021 4:51:17 GMT -5
Livyatan vs Megalodon is a popular face-off topic in wild animal forums. ( IMO ) These two behemoths probably ignored each other. Easier prey was plentiful for both. There was no logical reason, that I can think of, for these two Lords of the Sea to risk their lives in battle.
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Post by brobear on Dec 3, 2021 12:00:44 GMT -5
www.livescience.com/real-life-moby-dick-spotted Real-life Moby Dick spotted off the coast of Jamaica. The white sperm whale was spotted by sailors aboard a gas tanker. A rare white sperm whale, like the one depicted in the literary classic "Moby Dick," has been spotted off the coast of Jamaica. *Note: It seems that the public always gets excited over a white ( albino ) animal. Examples, white bison, white lion, white tiger, white gorilla, white horse, etc. I prefer the natural healthy colors.
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Post by OldGreenGrolar on Dec 13, 2021 6:12:54 GMT -5
Some albinos have pink eyes while others like the white tiger has blue eyes.
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Post by brobear on Dec 24, 2021 6:53:52 GMT -5
www.livescience.com/ichthyosaurs-grew-to-big-sizes-fast 55-foot-long Triassic sea monster discovered in Nevada. A sea monster that lived during the early dinosaur age is so unexpectedly colossal, it reveals that its kind grew to gigantic sizes extremely quickly, evolutionarily speaking at least. The discovery suggests that such ichthyosaurs — a group of fish-shaped marine reptiles that inhabited the dinosaur-era seas — grew to enormous sizes in a span of only 2.5 million years, the new study finds. To put that in context, it took whales about 90% of their 55 million-year history to reach the huge sizes that ichthyosaurs evolved to in the first 1% of their 150 million-year history, the researchers said. "We have discovered that ichthyosaurs evolved gigantism much faster than whales, in a time where the world was recovering from devastating extinction [at the end of the Permian period]," study senior researcher Lars Schmitz, an associate professor of biology at Scripps College in Claremont, California, told Live Science in an email. "It is a nice glimmer of hope and a sign of the resilience of life — if environmental conditions are right, evolution can happen very fast, and life can bounce back."
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Post by theundertaker45 on Jan 20, 2022 5:04:11 GMT -5
I've done some research on blue sharks as I've regularly read about 600cm+ behemoths which would be as long as huge great white sharks but the truth is they aren't anywhere near that. I've taken a look at the works of 6 different authors spending years (even decades) on capturing blue sharks and recording their morphometrics, here is a short summary:
Males
Length: 42-330cm Total Length (sample size of well over 500 animals, may include sexually immature individuals); size at sexual maturity depends on the area, it can range from 187-225cm in males
Females
Length: 70-349cm Total Length (sample size of well over 500 animals, may include sexually immature individuals); size at sexual maturity depends on the area, it can range from 203-228cm in females
Maximum Length
The largest officially measured blue shark was 383cm in terms of TL; 3 different authors found the theoretical maximum size to be 394cm, 401.5 and 423cm respectively using flawless methods based on the vertebrae physiology of hundreds of blue sharks. Regarding weight, the International Game Fish Association has the heaviest blue shark listed as 239.5kg, however, the 383cm behemoth is expected to have weighed around 391kg based on length/weight relations in blue sharks. This means that the theoretical max. length would surely pass 400kg, possibly even 450kg.
Official record: 383cm TL and 391kg
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Post by brobear on Jan 20, 2022 7:46:44 GMT -5
Quote: Official record ( of the blue shark ): 383cm TL and 391kg = 12 feet 7 inches long with a weight of 862 pounds. Really happy to see you back 'Taker.
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Post by brobear on Jan 24, 2022 9:36:23 GMT -5
Livyatan and Megalodon: In today's world, where there are two really big predators of near-equal size, the two normally avoid each other. When a predator hunts, he is looking for food. Not a fight. Saltwater crocodiles and large sharks are natural enemies. They eat each other's young, but adults do not attack adults. Amur tigers do not go out into the Russian taiga and attack male Ussuri brown bears. So ( IMO ) Megalodon and Livyatan were not likely out in the ocean fighting each other like in a Godzilla movie.
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Post by brobear on Feb 1, 2022 7:43:57 GMT -5
Why Megalodon (Definitely) Went Extinct
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Post by brobear on Mar 2, 2022 2:26:43 GMT -5
Why I believe that Livyatan was dominant over Megalodon:
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