7 Most Dangerous Jellyfish in the Underwater World

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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!

INTERESTING What happens if there is 1 pineapple per day for a month

What happens if there is 1 pineapple per day for a month

Pineapple is a very sweet fruit with a bunch of nutrients and vitamins. Once it was considered so exotic that only members of the royal families could afford it. However, in addition to all the useful things this fruit has, its frequent use can also harm health. Learn all the pros and cons of eating pineapple everyday in this article ...
ANIMALS Perhaps the Most Unpleasant But Interesting Facts About Cockroaches

Perhaps the Most Unpleasant But Interesting Facts About Cockroaches

It seems that there is no such person in the world who would love cockroaches. These disgusting insects often bother residents of apartments and houses, and besides, their neighborhood is not so easy to get rid of. What else is cockroaches infamous for? About this in the selection of cockroaches ...
ANIMALS Dogs That are Very Offended

Dogs That are Very Offended

Dogs are very emotional animals, and can be offended (or pretend) on a level with a person. Just look at these offended dogs, what a range of emotions they can give out!
INTERESTING Ingenious Everyday Inventions: 17 Ideas

Ingenious Everyday Inventions: 17 Ideas

Every day, people around the world face many inconveniences in using familiar things. Fortunately, at the same time, other people invent ingenious devices that simplify a human’s life. It is about such necessary, but very simple at first glance, things and ideas that will be discussed today ...