On August 19, according to foreign media reports, a group of young people encountered a large number of jellyfish floating on the sea while boating in southeastern Ukraine. The entire boat was surrounded by jellyfish swarms, making it difficult for them to move. . It is understood that this place is a habitat for jellyfish, but this year the number of jellyfish is higher than usual. In English, it is not often said that there is a large number of jellyfish, an ocean?of, the mnemonic method is one sea, it really feels like that.

As can be seen from the video released by foreign media, the jellyfish are not very big, about the size of a dinner plate. They are densely packed and have an airtight feeling. People with trypophobia should be careful, because the boat is surrounded by jellyfish. Surrounded by jellyfish, boaters have to use their oars to push away the jellyfish before they can continue to move through the water.

Jellyfish are very important plankton in the aquatic environment. They are very beautiful aquatic animals. Their body shape is like a transparent umbrella. Students who have watched SpongeBob SquarePants should instantly recognize it. As you can imagine, the diameter of the umbrella-shaped bodies of water trees can be large or small. The diameter of the umbrella-shaped bodies of very large jellyfish can even reach 2 meters. There are some whisker-like tentacles on the edge of the umbrella body, which are very cute when swimming, but some tentacles can be as long as 20-30 meters. Jellyfish are widely distributed in tropical waters, temperate waters, shallow waters, oceans about 100 meters deep, and even freshwater areas. And jellyfish existed as early as 650 million years ago, which means they appeared even earlier than the dinosaurs. There are more than 250 species of jellyfish in waters around the world.

According to relevant reports, global warming has intensified in recent years, which has led to the proliferation of jellyfish. Nowadays, the ocean temperature has increased by 1℃-2℃. This does no harm to jellyfish, but it has a serious impact on the natural enemies of jellyfish, namely sea turtles. The living environment of sea turtles has made it very difficult for these creatures to survive now. In addition, widespread human overfishing and excessive discharge of toxic drugs are also the reasons for the current flooding of jellyfish. Human over-hunting has seriously damaged the ecological balance of the marine world, causing aquatic molluscs such as jellyfish and harmful algae to multiply in the ocean.