7 Most Dangerous Jellyfish in the Underwater World

Photo 5 of 8

Portuguese boat (Physalia physalis)

The second name for jellyfish is physalia. Although this is rather not even a jellyfish, but a whole colony of polypoid and medusoid individuals. The «bite» of a Portuguese boat is extremely dangerous and painful (sensations are compared to hitting the skin with a whip). The main risk is the systemic effects of the poison. In severe cases, intense pain is followed by fever, shock, and impaired heart and lung function, which can lead to death. Physalias are accustomed to moving in groups of up to 100 colonies, and sometimes in resorts they have to close entire beaches because of them!

ANIMALS Animals That are Almost Impossible to Find in the Wild

Animals That are Almost Impossible to Find in the Wild

The main problem of the extinction of these rare animals is the overpopulation of their habitats, global catastrophes and weather disasters. So far, people have not wiped out unique species of fauna from the face of the earth, let's look at those who can hardly be found in the wild ...
ANIMALS Man, Stop it! Animals That Halved in 40 Years

Man, Stop it! Animals That Halved in 40 Years

More recently, the World Wildlife Fund has published statistics stating that wildlife has declined by 52% since 1970. Your attention is invited to a selection of animals that have experienced the influence of man on nature.
INTERESTING Is Sugar as Bad as We Think?

Is Sugar as Bad as We Think?

In this collection we will try to answer a very controversial and ubiquitous scandalous question: is sugar really harmful, as people think about it? Is it true that sugar consumption can cause diseases such as diabetes and cancer? Does sugar contribute to weight gain and obesity? We will try to answer these and many other questions about the sweet product right now ...
INTERESTING Top Coolest Dance Clubs in the World

Top Coolest Dance Clubs in the World

Night clubs are places with a special energy that you should plunge into at least once in your life. We present a list of the most chic dance clubs from around the world, which everyone would surely like to visit.