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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
Are shark eggs fertilized internally or externally?
They fertilize internally!
Many animals reproduce through internal fertilization. A male and female pair up and mate, and the female's eggs are fertilized inside her body. Empid flies mate in this way. The male empid fly is smaller than the female and risks being eaten during mating. To protect himself, he presents the female with a small insect to distract her.
More information can be found at the following web address:
http://www.infoplease.com/dk/science/encyclopedia/reproduction.html#ESCI309FERTIL
Can a shark live in cold water?
It depends on the type of shark, most sharks like living in warm or tropical waters,such as Hawaii and Australia.Some sharks though can live in colder waters,such as the Greenland shark and the Great White shark.The Great White Shark has even been seen in the cold waters of Sanfransisco
What are some similies for the word dangerous?
- As risky as walking a tightrope over a pit of fire.
- Like playing with a ticking time bomb.
- As perilous as navigating through a minefield.
What is the shark tagalong fish called?
The shark tagalong fish is called a remora. Remoras have a specialized dorsal fin modified into a suction cup that allows them to attach to larger marine animals like sharks for transportation and protection.
What will happen if you pet a shark?
Sharks have razor-like scales on their skin; your hand may start bleeding if you touch it the wrong way.
ANS2:Nurse sharks rather enjoy being stroked. They will stop swimming and lay on the bottom like a large, fat, wet cat. (Actually, they are a lot calmer than a wet cat.) Their scales are rough, like sandpaper, when stroked from tail to head but they don't cause any particular damage to your skin. When stroked from head to tail the scales are smooth and the skin feels like very smooth rubber.
Their scales may be sharp as razors but they are miniscule and so close together that the skin only feels rough.
Are human swimmers usually in great danger from sharks?
No, human swimmers are not usually in great danger from sharks. Shark attacks on humans are rare, and most shark species are not interested in preying on people. It's important to practice caution in areas known for shark activity, but the risk of a shark attack is very low.
What types of shark can be found near Barbados?
lots of sharks can be found near Barbados. There have been alot of recorded attacks. I would suggest not venturing to far out at sea. here are a few types of sharks
Great white shark
Bull shark
Tiger shark
Carrabean reef shark
Smooth hammerhead sharks and many more
The largest eggs in the world are laid by a shark?
Most sharks do not lay eggs, but instead bear live young, with the shark fetuses supported by the mother in a manner similar to mammals. Some others have eggs, but the eggs remain inside the mother, with the young living off each other. Of the remainder, some simply lay them on the bottom of the ocean, while others place them in crevices. Some of the bottom-laid eggs have long streamers that grab onto nearby objects and hang on until the young are born.
How many gill slits does a cookie cutter shark have?
A cookie cutter shark (Isistius brasiliensis) has five pairs of gill slits, which is characteristic of most shark species. These gill slits allow the shark to extract oxygen from water as it swims.
Sharks have a great diversity when it come to their reproductive system. There are two different ways for a Shark to reproduce depending on what kind of Shark it is, there are oviparous egg laying species and viviparous live-bearing species. Oviparous species lay eggs that develop and hatch. Where as the the viviparous species are live-bearers.
The Thresher Shark belongs to the viviparous species therefore do not lay eggs.
I hope that answers your question.
ThresherCove.com
Facts about the velvet belly lantern shark?
-a species of dogfish
-found from iceland and norway to Gabon and South Africa. Also in the Mediterranean sea, the Azores, the Canary islands, Cape Verde, and some off of Cape Province, South Africa.
-lives at depths ranging from 70-2,490 m or 230-8,170 ft
-usually no more than 45 cm long
-a bioluminescent shark
-young velvet bellies eat krill and small bony fish. older ones eat squid and shrimp
-they give birth to 6-20 young every 2 or 3 years
-robustly built
-moderately long, broad, flattened snout
-small upper teeth
-larger lower teeth
-it is brown from above, but abruptly changes to black on the under side
-its belly has numerous photophores that give off a blue-green light that you can see from 9.8 to 13 ft away
-Varying densities of photophores are arranged in nine patches on the shark's sides and belly, creating a pattern unique to this species
-one of the most abundant deep-sea sharks in the northeastern Atlantic
-these sharks are most abundant at 200-500m
-as these sharks mature and grow older they swim deeper so usually the larger sharks are found deeper
-on the scale of extinction they are Least Concerned
-in the family Etmopteridae
-scientific name is Etmopterus spinax
-they use both their eyes and a small gland in the brain to monitor information on -light shining down from above to change the brightness of their bellies
-this helps them so they can grab prey like krill almost invisibly
-these are 5 gilled sharks with blunt, frayed edge fins
-genus= Etmopterus
-unlike most sharks they don't have an anal fin
-this shark in addition to its bioluminescent belly it had bioluminescent eyes
-it has a distinct spin on the leading edge on each of its dorsal fins
Alligators and sharks typically live in different environments, with alligators primarily found in freshwater habitats and sharks in saltwater oceans. While it is not common for them to interact in the wild, there have been cases where they may come into contact in transitional areas like estuaries, but direct fights between them are rare.
Dogfish sharks have an excellent sense of smell and can detect odors from up to a mile away. They rely on their sense of smell to locate food, identify predators, and navigate their environment.
What is the nickname for a shark's egg case?
The nickname for a shark's egg case is a "mermaid's purse." These protective cases help to keep the developing shark embryo safe until it is ready to hatch.
There is no sequel titled "Feeding Frenzy 3" as of now. The original "Feeding Frenzy" game was developed by Sprout Games and its sequel was developed by PopCap Games, but there hasn't been any official announcement for a third installment.
To which group do sharks belong?
There are many families of fish, but all belong to the phylum Chordata. That is about as specific as you can get in terms of encompassing ALL fish. However, MOST fish, called are classed in Osteichthyes(Bony Fish), Sarcopterygii (lobe finned fish) and Chondrichthyes(sharks, rays, skates, etc), and a hundred or so species of primitive jawless fishes.
Reef sharks feed mostly on other fish.But like most sharks will take what is available.Jellyfish,seabirds,and other sharks are on the menu,as well.Reef sharks have been implicated in attacks on humans,but this is a rare occurence.Reef sharks are voracious predators,and are one of the shark species inclined to go on feeding frenzies.Hitlers behavior is triggered by a lot of injured prey in the water,as when Hitler attacks schools of mullet.
What do iridescent sharks eat?
when iridescent shark a small you can give them fish food or smaller fish to eat.but as they grow you can give them shrimp,worms ,blood worms,guppies and some small fishes (goldfish or mollies)
An oviparous shark is a shark species that lays eggs rather than giving birth to live young. The female shark will deposit fertilized eggs in suitable locations to develop and hatch outside of her body. Examples of oviparous sharks include some species of catsharks and horn sharks.
If hidden in a chunk of meat, a Shark may well swallow a Nail. But swallowing a Nail at the bottom, or sinking through the water - no.
Why do stars appear to be at rest though they are moving very fast?
Simply because they are so far away from you.
When you see a passenger airliner cruising at 35,000 feet over your neighborhood,
it doesn't look like what you'd expect from an object moving at 500 miles per hour.
Even the nearest astronomical body ... the moon ... is moving in its orbit at more than
2,200 miles per hour, and you can't actually see it moving.
Every star in the night sky is many millions of times farther away from you than
the moon is.
The megalodon was the worlds largest shark to ever live it lived in prehistoric times but is said to be extinct this shark was around 75ft long and there tooth was the size of a human hand they are related to the great white shark and is said to be the same exact way. Scientist say this animal is extinct but there is no real evidence for its extinction they said it could be food shortage when whales went to colder waters where the megalodon could not follow. But megaldon was the worlds biggest and most aggressive shark to ever live
Do cat sharks glow in the dark?
Yes, some species of cat sharks have been found to exhibit bioluminescence, which allows them to produce a faint glow in the dark. This luminous display is thought to play a role in communication, camouflage, or prey attraction in the dark ocean depths.
