Portuguese Man o’ War
Not only is the Portuguese man o’ war a strange looking creature, it is biologically strange as well. It is what is known as an aggregate animal, which is made up of numerous smaller organisms working together. The organisms are so entwined that they no longer have the ability to survive without each other.
And although its otherworldly appearance may be intriguing, make sure to keep your distance. The man o’ war’s long tentacles can deliver a painful sting which is also extremely poisonous. Fish are no match for it, but humans are also at risk, so keep an eye out if you ever find yourself hitting the beach in Florida.