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Sharks
When many think of sharks, they think of the movie Jaws or a dangerous man-eating fish. In reality, sharks is a large group of fish that includes very small to much larger fish. Some can be harmful to man and others are harmless. To delve into this interesting and diverse group of cartilaginous saltwater fish that have sharp teeth and a bad reputation, ask your questions in this category.
5,520 Questions
Do baby sharks drink milk from their mother?
no, sharks are fish not mammals and rarely give live birth. They do not produce "milk" for their young
AnswerNo, sharks are fish, in that they breath water using gills, wheareas mammals are categorized with land animals, which breath air using lungs. Sharks give live birth; in that perhaps most important sense they would fall into the category mammal. But sharks cannot produce milk, and mammal means giving milk in latin, although the name was derived a long time ago before modern science.Can you find shark teeth at Huntington beach in ca?
Probably if you look hard enough if your in California you might find a great whites
How do sharks and rays differ from perch and goldfish?
because sharks are big then rays and perch and goldfish..
Are there sharks under Golden Gate Bridge?
the menacing shark infrequently ventures under the Golden Gate Bridge to pay us a visit. However, there are 11 different species of shark that do call the San
Francisco baykeepers.
Does lemon sharks live in freshwater?
they do not live in fresh water.but they dont need to swim to breath.
What kind of shark has the longest migration?
The great white shark has been recorded to have one of the longest known migrations among sharks, traveling thousands of miles between feeding and breeding grounds. They have been observed traveling from South Africa to Australia and back.
How long does it take for a shark's tooth to turn black?
It can take several years for a shark's tooth to turn black, as it gradually absorbs minerals from the surrounding environment. The process can vary depending on factors like the tooth's size, age, and the conditions it's exposed to.
What shark is the common shark fossils?
Only the teeth are found , because a sharks skeleton is made out of cartilage. This results in poor to no fossilization of their skeletons and therefore is rarely found. I hope this is a sufficient answer.
Why are cartilaginous fish such as sharks constantly moving?
If sharks did not move then they would die, when they move its like they are breathing, I know we dont do it but they are sharks ya know xD
Can basking sharks can close their mouth?
No, the basking shark is the 2nd biggest shark in the world but eat the same thing as the whale shark ONLY KRILL, YOU WOULDN'T FIT IN SIDE
What are goblin sharks adaptation?
The Goblin shark (Mitsukurina owstoni) is in fact one of the most fascinating shark species, and for several reasons:
- It is considered a «living fossil», the only extant species of the family Mitsukurinidae, with only one known genus, the Mitsukurina.
This family also included the extinct Anomotodonshark, who lived from the Early Cretaceous to the Early Oligocene.
This shark survived the K-T mass extinction, as well as the apex predators of the most dangerous seas in the History of Life on Earth.
(Just remember the deep sea predators ichthyosaurs, pliosaurs and mosasaurs, not to mention the 20 metres long Basilosaurus cetoides, an apex predator toothed whale from the Eocene period).
The Scapanorhynchusowstoniis the second known extinct shark belonging to this family, from the Aptian age of the Cretaceous period, and VERY similar in size and shape to the extant Goblin shark.
There may be a third extinct shark in this family, but only a few fossil teeth are known, and many paleontologists do not recognize this shark,Pseudoscapanorhynchus, as a separate species from Scapanorhynchusowstoni.
- The Goblin shark is a deep sea water predator of fish, squid and crustaceans and its shape is unlike any other extant shark species, including the Sawshark and the Sawfish.
Some specimen has been fished, mostly in Japan waters, with a total lenght of 4 metres. However, marine biologists believe they can grow considerably larger, possibly up to 6 or 7 metres.
- From the fossil register, Mitsukurina owstoni seems to have not evolved from the Middle Eocene, about 49,000,000 years.
It is puzzling how it may have survived for so long from some of the most feroucious marine mega-predators ever, and through an extremely severe mass extinction (the K-T).
We still know very little about the Goblin shark, although we know its existence since 1898.
We don't know how deep it can dive, if it is an active or an ambush predator, its type of reproduction (viviparous, oviparous or ovoviviparous) because we NEVER have seen a female specimen, we don't know its life span and we don't know why it has such a long and flattened snout, as well as why its jaws evolved to such strange protuberant position.
Still a puzzling mystery shark...
At least 21 species of shark occur around the coasts of Britain, from the Small-spotted Catshark to the large streamlined Blue Shark and plankton eating Basking Shark. At least half of British Sharks, including the Dogfish, Porbeagle and Basking Shark, are resident off the British coast all year-round. Blue Sharks and Short Fin Makos are seasonal visitors, appearing in British waters in summer during their trans-Atlantic migrations. A few species, Smooth Hammerhead and Frilled Shark may be vagrants, occurring infrequently off the British coast, with their main distribution ranges being outside British waters. At least 11 shark species, including the Portuguese Dogfish, Black Dogfish, Kitefin Shark and Gulper Sharks are only found in deep water.
Sand sharks are not typically eaten by humans due to their cartilaginous structure, which makes their flesh unpalatable. Additionally, sand sharks are often protected due to their declining populations. It is not recommended to eat sand sharks.
What is the second biggest shark in the world?
The second largest shark species in the world is the Basking shark (Cetorhinus maximus). The largest shark species is the Whale shark (Rhincodon typus), so the second 'biggest shark' is probably also a whale shark!
How long do nurse sharks sleep?
Basedd on my experienes in Eleuthera, Bahamas, nurse sharks actually do nap, breathing regularly and without moving, which most shaks cannot do; they have to be moving to get enough water through their gills. Nurses can breathe stationary because they can pum water through their mouth and out their gills. Nurse sharks generally dont have a sleep period like we do, they dont have a long period of REM sleep, which is when you are in a deep sleep state. Nurse sharks generally nap for around an average of 1 hour, but sometimes 2, and 3 hours as well. Nurse sharks will nap either on the sea floor (in my case, in a small bay area, 20 feet deep) or in their shallow nests. Nurse sharks are generally nocturnal animals, which is why the often nap in the day.
There are between 360 and 400 known species of sharks, and their diet is not all the same. In general, sharks prefer live fish. However, they have been known to eat dead fish, and some species are considered valuable for how they clean up the sea of dead and wounded fish. Great white sharks have been known to feed on dead whales (which are mammals, not fish).
Yes. The only Shark that lives in the tundra (Antarctica) and has been studied by scientists is the Salmon Shark. They have special skin that protect them from freezing.
When somebody plays cards and you call them a shark?
When somebody plays cards and we call them a shark
What happens when fish gills are out of water?
When fish gills are out of water, they are unable to extract oxygen from the water, leading to suffocation. Gills rely on water passing through them to extract oxygen, so being out of water deprives the fish of the oxygen they need to survive.
What are the functions of a shark?
Sharks search the ocean looking for food. Attacks on people are extremely rare but do happen. Sharks find food by using small gelatinous filled pores in their noses to detect electrical waves given off by all living creatures.
Is there sharks in the hawksbury river?
yes sharks such as the woebegone and bull can live in rivers and lakes most of the sharks that live in rivers and lakes still stay close to the ocean for if it gets to cold these sharks are called fresh water sharks the woebegone like rivers because the bottom of the river is there skin tone the bull likes rivers because it mostly has more fish coming in and out of the ocean and that's your answer
Are dogfish related to sharks?
Theres a couple of different reasons for their name. Fishermen would often see them following the boats for scraps,with their heads poking out of the water 'begging' for food like dogs. And the other is when they hunt for prey on the seabed they sytematically sniff around like a dog would.
