Category: Fish

Salmon sharks maintain a 70-degree body temperature through high metabolic rates and internal heat exchanges. This study, by researchers at Stanford University, shows that salmon sharks also have an enhanced set of proteins that help their hearts contract at cold temperatures. How cold is too cold for sharks? Some sharks can survive temperatures as low […]

According to experts, a shark’s tongue is designed to provide protection, and it protects the ventral aorta, an important part of a shark’s anatomy. The ventral aorta is protected against large pieces of food since it is so near to the shark’s mouth. Can sharks bite their tongue? With sharp and piercing teeth, it’s common […]

Do sharks have tongues? Sharks have a tongue referred to as a basihyal. The basihyal is a small, thick piece of cartilage located on the floor of the mouth of sharks and other fishes. It appears to be useless for most sharks with the exception of the cookiecutter shark. What sharks have tongues? Sharks have […]

Shark tongues are constructed of cartilage, unlike human or other animal tongues, so muscle mobility is restricted. As a result, sharks cannot stretch the cartilage and push it out of their mouth. Ordinary sharks, unlike other animals, also do not require their tongues to grab their prey—at least not all of them. Can sharks bite […]

When it feels threatened, this bold, mid-sized member of the requiem shark family will hunch its back, raise its snout, droop its pectoral fins and swim with amplified movements. If the antagonist — say, a scuba diver — doesn’t heed the warning, the shark may deliver a swift bite or two before taking flight. How […]

According to experts, such as J. E. Randall, the largest, reliably measured Great White Shark, was 6.0 m (19.7 ft) in length, from Ledge Point in Western Australia in 1987. What is largest great white shark on record? What is the Biggest Great White Shark Ever Recorded? The biggest great white shark ever recorded is […]

Great white sharks can swim at speeds of 25 km/hr (16 mph) for short bursts and to depths of 1,200 m (3,900 ft). The great white shark is an apex predator, as it has no known natural predators other than, on very rare occasions, the orca. What creature eats great white sharks? Killer whalesKiller whales […]

The shark has been attacked by a ginormous sea louse that latches onto its prey’s head. It suffocates the shark, slowly killing it before devouring its body. The alien creature is actually a giant isopod, a relative of the woodlouse that lives in the ocean. What can scare a shark? The market offers five main […]

Sharks aren’t afraid of the dark.” But when the sun sets and his friends begin telling spooky stories, Clark’s rhyme sounds quiet and small and not brave at all. In this empowering tale about conquering nighttime fears, Clark the Shark learns how friendship can help light the way through the dark. Do sharks ever attack […]

Great white sharks eat 11 tons of food a year while the average human eats closer to half a ton of food each year. Whale sharks are the world’s biggest fish. Sharks mature slowly and reach reproductive age anywhere from 12 to 15 years. Sharks have been swimming in the ocean for more than 400 […]

The list of animals that eat great sharks isn’t very large, however, they are hunted by one competing predator that’s proven quite adept at eating great whites: Killer Whales (Orcas) Other Great White Sharks. Humans. What animal eats sharks? OrcasThough the great white is considered the top marine predator, orcas may actually rule the oceans, […]

The great white shark is the ultimate ocean predator. It is on the top of the food chain, and its only biggest living threat is humans. Although great whites are not the largest sharks, they are the biggest predatory sharks living in the world’s oceans. Is a great white shark a top predator? Carcharodon carcharias […]

While some sharks are probably not very selective feeders, certain sharks eat some foods more than others. For example, hammerhead sharks (Sphyrna spp.) are known for eating stingrays; bull sharks eat other sharks; and smooth dogfish (Mustelus spp.) eat crabs and lobsters. Which animal eats lobster? Lobsters have many predators including eels, crabs, seals and […]

hammerhead sharks. ‘All seeing’ hammerhead sharks could have the best vision in animal kingdom. It may be ugly but the distinctive snout of the hammerhead shark means it has some of the best “all round” vision in the animal kingdom, scientists have discovered. Do sharks have good vision? In studies of sharks eyes it was […]

Yes, sharks can see. However, tapetum lucidum is a special tissue present in sharks that makes it particularly adept at seeing under water. This tissue of mirrored crystals enables the animal to contract and dilate its pupil in much the same way as humans are able to. Other bony fish are not capable of this. […]

Dracopristis (Hoffman’s dragon shark) is a genus of extinct ctenacanthiform (spined fish) chondrichthyes (fish with cartilaginous skeletons) that lived around 307 million years ago, during the Pennsylvanian sub-period of the Carboniferous period. Is a dragon shark real? The dragon shark falls in a family of sharks called Ctenacanths, which evolved separately from modern sharks about […]

This line, which is found in all fish, is made of cells that can perceive vibrations in the water. Sharks can detect both the direction and amount of movement made by prey, even from as far as 820 feet (250 meters) away. Are great white sharks blind? Great White Sharks don’t have eyelids, but they […]

Great White Shark Facts Overview Habitat: Coastal waters Location: Almost everywhere, high concentration in USA, South Africa, Japan, Oceania, Chile and the Mediterranean Lifespan: 70 years Size: Females: 4.6-5m, Males: 3.4-4.1m Weight: 520 – 1,100 kg Where do great white sharks appear? Great white sharks live in almost all coastal and offshore waters which have […]

Sharks have many obvious advantages over people in the water, especially when it comes to senses. In addition to those we have – sight, hearing, touch, smell and taste – sharks have two other senses, mediated by specialized receptors: electroreceptorselectroreceptorsElectroreception and electrogenesis are the closely-related biological abilities to perceive electrical stimuli and to generate electric […]

Interesting Great White Shark Facts Sharks are much older than dinosaurs. Great Whites are warm-blooded. Great White sharks can smell blood from 5km away. They can sense electrical fields in water. Great white sharks have glow in the dark eyes. Their blood is toxic. They live much longer than we used to think. What is […]