Sharks: Facts about some of the ocean's top predators
2025年1月21日 · 5 fast facts about sharks. The largest known great white shark was 20 feet (6 meters) long.; Sharks sleep, but they may keep their eyes open while they do it.; Sharks can learn to solve puzzles by ...
Sharks: News, features and articles - Live Science
2025年1月21日 · Bite into the meatiest coverage of great white sharks, megalodons and more with the latest shark news, features and articles from Live Science.
Secret of why Greenland sharks live so incredibly long finally …
2024年7月16日 · To measure the sharks' metabolism in the new study, the researchers took tissue samples from the muscle of 23 Greenland sharks that were caught on the south coast of Disko Island in central Greenland.
Great white sharks split into 3 populations 200,000 years ago and …
2024年8月7日 · Like salmon, female sharks always return to their birth site to drop their pups, Noble said. This means that the sharks' mitochondrial DNA, which they inherit only from their mothers, "is a bit ...
Biggest sharks in the world - Live Science
2022年7月5日 · Basking sharks are often regarded as slow, gentle giants but they are capable of rocketing out of the water at speeds of 11 mph (18 km/h) and jumping 4 feet (1.2 m) in the air to breach, Live ...
Was Alexander the Great eaten by sharks? Inside the wild theories …
2025年1月31日 · The remains of Alexander the Great may lie under the streets of Alexandria, they may have been "eaten by a shark," or they may be somewhere else entirely. But one thing is certain: Archaeologists ...
Scientists examine bloody mating wounds to reveal details of …
2025年1月7日 · The team then applied this healing scale to pictures of sand tiger sharks from the database Spot A Shark U.S.A., which encourages citizen scientists to submit images of C. taurus snapped along the ...
20 of the weirdest sharks - Live Science
2022年7月5日 · Whale sharks are the biggest sharks alive today, and have eyes surrounded by tiny teeth. (Image credit: Brent Durand via Getty Images) At up to 33 feet (10 m) long, whale sharks are the biggest ...
Science quiz: How much do you know about sharks, the iconic …
2024年11月22日 · Sharks play a critical role in ocean ecosystems, and they're found in all of Earth's oceans. But many species are now under threat from climate change, overfishing, pollution and the shark fin trade.
How did sharks become Earth's 'ultimate survivors'? Paleontologist …
2024年9月25日 · The big question is, what is the relationship between sharks and placoderms like Dunkleosteus, these armored fishes that ruled the roost in the Silurian and Devonian periods [444 million to 359 ...