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!

AUTO 10 SUVs With Which it is Better Not to Measure Anything

10 SUVs With Which it is Better Not to Measure Anything

Most people are accustomed to the fact that an SUV is primarily a car that can overcome any obstacles that may be encountered on the way: whether it be dirt, stones, holes or dense foliage. However, the news of SUVs declare themselves quite boldly: it is better not to compete with them!
ANIMALS 12 Dogs That Have Become Famous all Over the World

12 Dogs That Have Become Famous all Over the World

List of dogs whose affairs were not limited to lying on the couch and eating food. These dogs really became the heroes of their time and deserved to be mentioned in history. Why did these dogs deserve such fame and how did they end up on this list? More on this later ...