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!

SOCIETY Before And After: Incredible Weight Loss Transformation

Before And After: Incredible Weight Loss Transformation

Throughout the world, up to 30% of the population is overweight. Someone does not have time to go to the gym, someone is not able to restrain from sweets, and someone simply does not have enough motivation. But people from today's selection are definitely not from this number, because their transformations are an example of what if you really want to, you can achieve everything and now they themselves serve as motivation for others ...
INTERESTING Titanic Then And Now: 30 Photos

Titanic Then And Now: 30 Photos

The tragedy of 1912, when the Titanic sank, left an indelible mark on the hearts of millions of people. Today, the archive contains photographs from the bottom of the ocean in which the liner sank. This selection will clearly show the very unique shots of the sunken ship in comparison with the pictures that were taken in the year of the tragedy.