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!

CELEBRITIES 15 Photos of Animals Strikingly Similar to the Stars

15 Photos of Animals Strikingly Similar to the Stars

The world of people and animals has been closely connected by invisible threads for many centuries. Among amusing animals it is surprisingly often possible to meet familiar facial features of some world celebrities. Perhaps this is due to the popularity of celebrity, because it is their faces that we see every day on TV screens and pages of glossy magazines. But, from here it is easy to conclude that if you look closely, everyone can find a double in the animal world!
ANIMALS Man, Stop it! Animals That Halved in 40 Years

Man, Stop it! Animals That Halved in 40 Years

More recently, the World Wildlife Fund has published statistics stating that wildlife has declined by 52% since 1970. Your attention is invited to a selection of animals that have experienced the influence of man on nature.