What is the difference between a jellyfish and a Portuguese man o' war?

While jellyfish and Portuguese man o' war may look similar at first glance, they are actually very different creatures. Jellyfish are single organisms, while the Portuguese man o' war is a colony of individual organisms working together.

Jellyfish have a bell-shaped body and trailing tentacles, while the Portuguese man o' war has a gas-filled bladder that floats on the surface of the water and long, trailing tentacles that hang below it.

Another important difference between jellyfish and the Portuguese man o' war is their venom. While both can be dangerous to humans, the Portuguese man o' war is known for its extremely painful and sometimes deadly sting.