7 Most Dangerous Jellyfish in the Underwater World

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Hairy cyanea (Cyanea capillata)

This jellyfish is also often called the «lion’s mane» because of its voluminous tentacles and rather impressive size. The diameter of the cyanea dome can reach 2.5 m, and the tentacles — 30 m in length. The bite of the giant jellyfish is quite painful, and the toxins in the venom can cause allergies in humans or kill small fish. At the moment, only 1 case of death has been registered in the world after the burn of this jellyfish.

The 7 Worst Epidemics in Human History

The new year 2020 began with the advent of a new virus in the Chinese city of Wuhan. To date, coronavirus has claimed about 100 lives and continues to test people for strength. The history of mankind has repeatedly known extremely dangerous viruses and epidemics, which claimed millions of lives, wreaking havoc on the trail of panic and chaos. But even the worst of all infections, people managed to win and live on ... exactly until the next outbreak of some mutated flu.

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!