When they can smell blood in the water.
Yes, sharks have a keen sense of smell and can detect blood in the water from miles away. Their ability to detect even tiny amounts of blood helps them locate potential prey.
Sharks rarely come near shore at beaches. Unless you're swimming with sharks, I wouldn't recommend swimming. Blood makes sharks react and could kill you brutally.
Sharks aren't likely to be somewhere that you're swimming, but they can smell even the smallest trace of blood in the water. Sharks are unlikely to come and kill you if you go swimming on your period using tampons. This is largely a moot point, just don't go swimming with sharks.
Yes, because sharks can smell blood vey well. If you are swimming in an area with a history of frequent shark attacks, it is best to not go swimming while you have your period.
YES
yes
-sharks have cartalige, NOT bones -the myth "a shark can sense a drop of blood in an olympic sized swimming pool", not true. they could smell a drop of fish blood, not human blood...-the dorsal fin on a shark is bent backwards-sharks can have anywhere between 5-7 gills-sharks are attracted to flashy/bright/highly contrasting colors because they remind them of a fish-sharks can range from being able to hold them in your hand, to being over 60 feet long
if you have sharks swimming around you, cut yourself, and draw blood, it will make them go away, and if you try what i just told you, GOOD LOOK.
if you have sharks swimming around you, cut yourself, and draw blood, it will make them go away, and if you try what i just told you, GOOD LOOK.
Sharks use their keen sense of smell to detect blood in the water, even in very small concentrations. They also rely on their vision and electroreception, which allows them to detect the electrical fields generated by prey animals. Sharks are opportunistic feeders and will search for food using a combination of these sensory abilities.
Sharks are not mammals, and they do not drink blood.