The man-of-war jellyfish is called this name because it looks like a monk's hat. Although the appearance looks very interesting, the man-of-war jellyfish is very powerful. It is the most poisonous jellyfish in the world. The toxin of the man-of-war jellyfish is as potent as any venomous snake in the world, and there are many serious cases of being stung by the man-of-war jellyfish.

The man-of-war jellyfish looks like this. It is a light blue transparent sac-like body floating on the water. The front end is pointed, the rear end is blunt, and the top is raised in the shape of a dorsal peak. The shape is quite similar to the hat of a monk who is a monk, so it is named the man-of-war jellyfish. But in fact, the man-of-war jellyfish cannot be completely regarded as a "jellyfish".

Because Man-of-war is a community containing polyps and jellyfish bodies. Each individual is highly specialized and closely linked to each other, and cannot survive independently. Man-of-war jellyfish are known for their floating habit and extremely painful sting. The man-of-war jellyfish inhabits tropical oceans and lives a planktonic life. It is often blown to the seaside by the wind or moves with the sea currents, and feeds on tiny organisms and organic matter.

The killing weapon of the man-of-war jellyfish is its tentacles. The tiny tentacles of the man-of-war jellyfish can reach 9 meters long, so it is already too late for many swimmers to avoid the man-of-war jellyfish when they see it. The deadly toxins secreted by the man-of-war jellyfish are the tiny stinging cells in the tentacles. Although the toxin secreted by a single stinging cell is insignificant, the toxin accumulated by thousands of stinging cells is as powerful as any venomous snake in the world today.

The toxin secreted by man-of-war jellyfish belongs to the neurotoxin . As time goes by, the effect of the toxin gradually increases. In addition to severe pain, the injured will also experience a sudden drop in blood pressure, difficulty breathing, gradual loss of consciousness, systemic shock, and finally death due to pulmonary circulation failure.

In 1964, Clayman, a retired businessman, was unfortunately stung by a man-of-war jellyfish while swimming. Although he tried his best to escape back to the beach, he fell unconscious. Although doctors tried their best to save him, they could not be brought back to life. A scientist was once stung by a man-of-war jellyfish underwater. He felt burning pain all over his body and went into shock after being sent to the hospital. Fortunately, the rescue was timely and his life was saved.