Sharks: Facts about the ocean's apex predators | Live Science
2022年7月4日 · Sharks are a diverse group of often-misunderstood fish. Learn more about these predators, including their evolution, habitat, diet and behavior.
Sharks: News, features and articles - Live Science
2024年12月6日 · Bite into the meatiest coverage of great white sharks, megalodons and more with the latest shark news, features and articles from Live Science.
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 ...
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.
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 ...
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 ...
Stunning video shows sharks devouring sea urchins, spines and all
2024年10月6日 · Sharks, however, were very interested in the urchins. Both crested horn sharks ( Heterodontus galeatus ) and Port Jackson sharks ( H. portusjacksonii ) entered the den and ate 45% of the urchins.
Greenland sharks: Toxic, half-blind giants of the ocean
2022年1月7日 · Greenland sharks have cylindrical bodies covered in teeth-like scales, called dermal denticles. These specialized scales reduce drag and help the sharks move more silently through the water ...
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 ...
Sharks are older than the dinosaurs. What's the secret to their …
2022年7月26日 · Sharks are close relatives of skates, rays and chimeras, all of which belong to a group of fish known as the chondrichthyes, which are distinct in that most of their skeleton is made of cartilage ...