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 Useful Car Accessories You Might not Know About

Useful Car Accessories You Might not Know About

Chinese engineers have come up with many useful, but sometimes very strange-looking, accessories for the convenience of using the car and increasing the comfort of the driver behind the steering wheel. This collection will acquaint you with the most unusual of them!
INTERESTING What are these products made of? You will not believe!

What are these products made of? You will not believe!

At first glance, all these products are quite edible and appetizing and look so realistic that immediately there is a desire to sweep them off the plates without a trace. In fact, all this food is the work of the talented Japanese sculptor Seiji Kawasaki, who makes identical-looking food products from ... wood!