(#8) Some Jellyfish Can Grow Tentacles Over 90 Feet Long
The largest jellyfish species is called the Lion's Mane jellyfish and can grow its tentacles to be over 90 feet long. They sometimes extend longer than the blue whale, the largest mammal on earth.
Source: All That Is Interesting(#12) Jellyfish Have Been on Earth for Over 500 Million Years
The oldest jellyfish fossils ever found date back at least 500 million years, to the Cambrian Period. This was long before dinosaurs ever even roamed the planet!
Source: Live Science(#4) Jellyfish Don't Have Brains
In fact, they don't have much of anything at all. They don't have a brain, ears, eyes, or even a heart. They are a very basic creature with a simple nervous system.
Source: NOAA(#20) Jellyfish Are Actually Terrible Swimmers
They are terrible swimmers who resort to floating with the currents to get by. They are able to open and close their bodies to move, but not very fast.
Source: NOAA(#17) Several Hundred Metric Tons of Jellyfish Are Eaten Each Year
Several hundred metric tons of jellyfish are eaten each year, most commonly in Asian countries, where citizens have been eating the creature for thousands of years.
Source: Eat the Weeds(#16) There Are 200 Different Types of Jellyfish
There are more than 200 different types of jellyfish that inhabit the ocean.
Source: Orma
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Studies have shown that jellyfish have existed on the earth for 650 million years and have experienced five mass extinctions. Such ancient creatures do contain many mysteries, and many scientists are devoted to exploring the world of jellyfish. It is lucky that we can watch different jellyfish in various aquariums and learn more knowledge about these beautiful sea creatures. Do you know that the transparent and beautiful jellyfish get oxygen from the surrounding seawater through their thin skin, so they don't need a respiratory system?
Welcome to check the random tool if you are interested in jellyfish, the random tool introduced 21 fun facts about jellyfish that you may never know. The first thing you should know is jellyfish are not fish, but invertebrates.
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