What Tooth like scales embedded in the skin of rays and sharks?
Placoid scales, also known as dermal denticles, are the tooth-like scales embedded in the skin of rays and sharks. They provide protection and reduce drag when swimming.
How do sharks contribute to the environment?
sharks contribute to the environment in many ways. They scavenge for food as well as hunt, so the ocean is alot cleaner than it would be if sharks became extinct. also, they help cull the weak and dieased. if they didn't, more of the fish could catch the disease, and their would be a dramatic change in the marine ecosystem.
that's not all, that's just some of the important stuff. if you have any more questions, you can contact me at sharkruler5000@gmail.com. im a huge shark fan!!!
SOS
Save Our Sharks
How many people die from shark attacks?
On average, there are around 5-10 shark attack fatalities worldwide each year. It is important to note that the risk of a fatal shark attack is very low compared to other risks, such as drowning or car accidents.
What is a good website for shark information?
The Shark Research Institute website is a reliable source of information on various shark species, conservation efforts, and research findings. National Geographic's shark section is also a great resource with articles, photos, and videos about sharks and their habitats.
Lemon sharks are apex predators in their environment, meaning they are at the top of the food chain. Their diet consists of a variety of fish, crustaceans, and occasionally small mammals. Larger sharks, such as tiger sharks or great white sharks, could potentially prey on lemon sharks.
Why do bull sharks attack humans?
It's not always a bull shark. It can be a great white. It can be a hammerhead. But, you're correct bull sharks are the usual attacker. They are attracted to light at night. Sharks in general do not have good eyesight. They think humans are their daily prey because they think we are turtles, seals, and other smaller creatures. But, we aren't. The shark drowns if it stops swimming. So it is hard for the shark to get its prey quietly. So, if you're at the beach in Brazil (has a lot of sharks there) and hear "SHARK!!!" it means that someone obviously saw the predator because the water is clear there. Psst! You might want to get out!
SHARK FACTS:
bad eyesight
more aggressive in murky water
a lot of sharks in the Bahamas
less aggressive in clear water
What is the life cycle of the Smooth Dogfish Shark?
Smooth Dogfish Sharks have a typical life cycle that includes mating, gestation period of about 10-11 months before giving birth to live young, and then the newborn sharks are independent and grow to maturity over several years. They typically live up to 16-20 years old in the wild.
What is faster a Mako Shark or a cheetah?
Yes, the Shortfin Mako (Isurus oxyrinchus) is the fastest shark in the world. Though everyone had come to a general consensus about this, there is still debate as to how fast they can actually go - some say that they can only go a little over 20mph, however others say that it has been clocked at 60mph.
How much does a carpet shark weigh?
Carpet sharks can weigh anywhere from 1 to 9 pounds, depending on the species and size of the individual shark.
Sharks typically do not prey on snails as they prefer larger, more energy-rich prey such as fish, seals, and other marine animals. Snails are not a common food source for sharks due to their small size and hard shells, which may not provide enough nutrients for the shark.
Leopard sharks primarily feed on small fish, crustaceans, and mollusks. They are bottom-dwellers that use their electroreceptors to detect prey in the sand or mud. They are opportunistic feeders and will also scavenge on dead animals.
A shark attack is when a shark bumps, bites, or otherwise injures an animal or mammal. Some survive, some do not. (reefannie)
Sharks do not seek out blood specifically as a food source, but they are attracted to the scent of blood in the water as it can signal the presence of injured or struggling prey. Sharks primarily rely on their keen sense of smell to locate potential food sources, and blood can act as a strong attractant for them.
How many teeth does a white tip reef shark have?
White tip reef sharks typically have around 50-60 teeth. These teeth are sharp and serrated, ideal for catching and feeding on their prey of small fish and invertebrates.
What are the biotic factors of a shark?
Biotic factors of a shark include its prey, competitors for food, and symbiotic relationships with other organisms that may benefit or harm the shark. For example, the availability of fish and marine mammals for food, competition with other predators for the same resources, and the presence of cleaner fish that remove parasites from the shark's skin are all biotic factors that can influence the shark's survival and behavior.
What type of fish do sharks eat?
Sharks primarily eat fish, including smaller species like mackerel, herring, and sardines. They also feed on other marine animals such as squid, octopus, and crustaceans. Some sharks may also prey on mammals like seals and sea lions.
Angel sharks can grow up to around 5 to 6 feet in length, with some species reaching up to 8 feet. They have a flattened body and are known for their unique angelic appearance, with wide, pectoral fins resembling wings.
Where does the Bamboo Cat Shark live?
The Bamboo Cat Shark, also known as the Japanese Wobbegong, is commonly found in the waters of the western Pacific Ocean. It can be seen in regions such as Japan, Indonesia, Philippines, and Australia. They inhabit shallow waters near coral reefs and rocky areas.
What era did sand sharks first appear?
Sand sharks first appeared in the late Eocene epoch, which spanned from approximately 56 to 33.9 million years ago. Fossil evidence suggests that sand sharks were present during this time period and have continued to exist to the present day.
How much does a tiger shark eat in one day?
Tiger sharks can eat up to 90 pounds (40 kg) of food in one day, but this can vary depending on factors such as the availability of prey and their size. They are opportunistic feeders and have a varied diet that includes fish, seals, dolphins, and even garbage.
What is the function of a liver in a dogfish shark?
The liver in a dogfish shark acts as a storage site for fats, oils, and other nutrients. It also helps with buoyancy control by regulating the shark's lipid content. Additionally, the liver plays a role in detoxifying waste products in the shark's body.
How strong is a shark' s bite?
A shark's bite force can range from a few hundred to over a thousand pounds of pressure, depending on the species. The strongest recorded bite force belongs to the great white shark, which can exert over 4,000 pounds of pressure per square inch with its bite. This enables sharks to easily crush prey with their sharp teeth.
Which is faster a marlin or a shark?
On average, sharks are faster than marlins. Sharks can reach speeds of up to 40 mph, while marlins can swim at speeds of around 50 mph. However, this can vary depending on the species and the specific conditions.
What is a fish that can blink with both eyes?
A fish that can blink with both eyes is the four-eyed fish. Although its name suggests that it has four eyes, it actually only has two eyes like other fish, but each eye is divided in two parts allowing it to see above and below the water simultaneously.