7 Most Dangerous Jellyfish in the Underwater World

Photo 5 of 8

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 You Eat 2 Bananas a Day?

What Happens if You Eat 2 Bananas a Day?

Bananas are one of the most popular fruits in the world. They are fourth in the list of the most valuable food crops and are grown in more than 105 countries. Despite the short shelf life, bananas are great as a healthy food. Largely due to the sweet taste and the rich amount of vitamins contained in it. But is everything as rosy as it might seem at first glance? Find out what happens if you eat 2 bananas a day!
ANIMALS Exotic Pets Held by the Chinese at Home

Exotic Pets Held by the Chinese at Home

Snakes, crocodiles, spiders, toads - this is not the whole list of domestic animals brought up by the inhabitants of China. We share with you the stories and photos of the owners of the most exotic species of animals ...
ANIMALS How Different Animals See the World

How Different Animals See the World

Everyone probably has long known that animals see this world differently from humans. Some may even know what exactly is changing in the visual perception of a snake, cow or turtle. But sometimes knowing in words is sometimes not enough, so we offer you to see everything with your own eyes!
SOCIETY What Did the Most Beautiful Women in the World Look Like 100 Years Ago?

What Did the Most Beautiful Women in the World Look Like 100 Years Ago?

Each period in our history is distinguished not only by significant events and moments that turned its course once and for all, but also by certain standards of appearance that were adopted at one time or another. Today we offer you to see what were the standards of beauty 100 years ago among women and which of them were considered at that time the most attractive, charming and desirable ...