Plutonium

Plutonium: A History of the World’s Most Dangerous Element.

• Polonium is One Nasty Element. Polonium isn’t much worse than any other radioactive element, until it gets inside your body!.
• Mercury is Deadly and Omnipresent.
• Arsenic is a Classic Poison.
• Francium is Dangerously Reactive.
• Lead is the Poison We Live With.
• Plutonium is a Radioactive Heavy Metal.

Synanceia verrucosa, a species of stonefish, is lined with dorsal spines that deliver an intensely painful and lethal venom. It is sometimes called the most venomous fish in the world.

Stanford University researchers say the animals who most kill Americans are farm animals; hornets, bees and wasps; followed by dogs.

hippopotamus

The venom bulb acts like a pump to deliver venom through the venom duct into the harpoon, injecting it into the prey. The rostrum acts like a mouth, engulfing the prey in one big chomp. Some hours later, the snail burps out any indigestible fish parts such as scales and fish bones, along with one used harpoon.

With so many dangerous animals in Africa, many people often overlook the fact that the hippopotamus is actually the biggest killer of humans of all large African animals. Although hippos are herbivores, these highly territorial animals are estimated to kill an incredible 3,000 people each year.

bull sharks

The great white is the most dangerous shark with a recorded 314 unprovoked attacks on humans. This is followed by the striped tiger shark with 111 attacks, bull sharks with 100 attacks and blacktip shark with 29 attacks.

Hammerheads are aggressive hunters, feeding on smaller fish, octopuses, squid, and crustaceans. They do not actively seek out human prey, but are very defensive and will attack when provoked.

Although sharks rarely bite humans, the tiger shark is reported to be responsible for a large share of fatal shark-bite incidents, and is regarded as one of the most dangerous shark species. They often visit shallow reefs, harbors, and canals, creating the potential for encounter with humans.

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.

Tiger sharks are responsible for more recorded attacks on humans than any shark except the great white, but here they are calm, friendly and curious.

Slowly back away “You must try and keep the animal in sight and very slowly and gently try and swim backwards and get into shallow water. Again, you’ve got to be careful — large sharks can attack in very shallow depths.”

“If… a shark bites you, what we recommend is you should hit the shark in the eye, in the nose, or stick your hand in the gills,” says Chris Lowe, of the California State University Long Beach Shark Lab, in an instructional video. “Those are all sensitive tissues and quite often it causes the shark to release.”

Like us – they found no evidence urine attracts sharks. As for the likelihood your blood will attract sharks – well, while their sense of smell is good, it’s not as supernatural as people think – especially for the small amounts of blood released routinely by a human.

Natural repellents The Pardachirus marmoratus fish (finless sole, Red Sea Moses sole) repels sharks through its secretions. The best-understood factor is pardaxin, acting as an irritant to the sharks’ gills, but other chemicals have been identified as contributing to the repellent effect.

Since sharks see contrast colors, anything that is very bright against lighter or darker skin can look like a bait fish to a shark. For this reason, he suggests swimmers avoid wearing yellow, white, or even bathing suits with contrasting colors, like black and white.

Their study shows that although the eyes of sharks function over a wide range of light levels, they only have a single long-wavelength-sensitive cone type in the retina and therefore are potentially totally color blind. …

When they die naturally, they sink to the seafloor, where they are eaten by scavengers. However, when they are hunted by humans, they are removed from the ocean, disrupting the ocean’s carbon cycle.

They will bite down onto the limb, which is typically attached to a deceased individual. It’s not usually the cause of death, but someone has drowned and they’re hanging in the water. The shark will bite off the limb and spiral down to shred the flesh from the bone.”

Sharks are also scavengers. They eat dead fish and mammals or any other meat they can get.

Only about a dozen of the more than 300 species of sharks have been involved in attacks on humans. Sharks evolved millions of years before humans existed and therefore humans are not part of their normal diets. Sharks are opportunistic feeders, but most sharks primarily feed on smaller fish and invertebrates.

“We do know that sharks don’t like to eat people,” he said. “Studies show they respond strongly to the smell of seals and fish, but not humans. The trouble with sharks is that they are inquisitive and when checking out a potential prey item they typically come up and have a nibble.

Yellow, white, and silver seem to attract sharks. Many divers think that clothing, fins, and tanks should be painted in dull colors to avoid shark attacks. Blood: Though blood itself may not attract sharks, its presence combined with other unusual factors will excite the animals and make them more prone to attack.

Read on to find out more about six species which have a taste for human flesh.

• Hyenas.
• Leopards and tigers.
• Wolves.
• Pigs.