The man-of-war's body consists of a gas-filled, bladder-like float (a polyp, called the pneumatophore) - a translucent structure tinted pink, blue, or violet - which may be 3 to 12 inches (9 to 30 centimeters) long and may extend as much as 6 inches (15 centimeters) above the water. Beneath the float are clusters of polyps, from which hang tentacles of up to 165 feet (about 50 meters) in length. The "animal" moves by means of its crest, which functions as a sail.
Some of the tentacles of the Portuguese Man-Of-War bear stinging nematocystic (coiled thread-like) structures that paralyze small fish and other prey.
The pictures here were taken on Caye Caulker.
In the water.