Lion’s mane jellyfish
The sixth spot goes to the Lion’s Mane Jellyfish. They are highly attractive and amazing sea creatures and is by far the biggest known jellyfish. Its head can go as wide as 8’ in diameter, and its tentacles can extend to a length of one hundred feet long. Mane Jellyfish are just surreal, humongous, and they travel in blooms. Do not be deceived, for despite their looks, they can be deadly.