Types of jellyfish
Before rebooking that trip to El Nido or Hawaii, take a few minutes to do some research. Not all jellyfish are poisonous or have painful stings. Additionally, jellyfish tend to migrate based on the temperature and season. They are more common near beaches during the summer or dry season, rather than cold or rainy seasons.
If the beach you plan to vacation at has signs or warnings that indicate jellyfish are dangerous, it would be wise to be careful. Some of the most dangerous jellyfish include the following:
Box jellyfish are not only the most venomous jellyfish, they are also one of the deadliest marine animals out there. The most famous is the Australian box jellyfish and is scientifically known as Chironex fleckeri. This species of jellyfish is the largest of all box jellyfish, measuring up to a foot in diameter with 10-foot long tentacles.
The Portuguese man-of-war (Physalia physalis) jellyfish is another one of the jellyfish to watch out for at the beach. It gets its name from its unique shape, which looks like a warship. Some people also refer to it as the bluebottle jellyfish because of its translucent blue color.
Technically, the Portuguese man-of-war is not a “real” jellyfish but rather a group of organisms called siphonophores. The floating portion of the Portuguese man-of-war is a similar size to the box jellyfish. But its tentacles can reach up to 165 feet long.
This “jellyfish” is not as poisonous as the box jellyfish. The sting may not be enough to kill humans, but it is extremely painful.
Out of the three jellyfish listed here, only this type of jellyfish is a “true” jellyfish. These jellyfish are the most abundant and common in the water. However, their sting isn’t as dangerous as the box jellyfish and the pain isn’t as bad as the man-of-war.