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 9 Mysteries of the Past That Still Remain Unresolved

9 Mysteries of the Past That Still Remain Unresolved

The world is an amazing thing, filled with many secrets. To this day, researchers and great minds from all over the world are trying to solve the puzzles that our Universe periodically throws up to us. Some of them can be solved, althought not in the shortest possible time, but some remain unresolved for thousands of years and to this day confuse scientists. It is about such secrets and mysteries of the past that this collection will be discussed ...
ANIMALS The 20 Most Fun and Unusual Animal Air Passengers

The 20 Most Fun and Unusual Animal Air Passengers

Have you ever wondered how animals travel through the air? This topic is of great interest to the people for a reason, because the animals on board the aircraft are not only funny pictures, but also huge psychological support! If the passenger proves that his beloved pet is able to provide him with psychological assistance during the flight, then he will be allowed to take him with him to the cabin (though in a special cage or carrying). But the fact remains! It is quite possible to meet an animal during air travel and thanks to this we have the opportunity to enjoy funny pictures. For example, such as in this collection!