Phymanthus
Phymanthus is a genus of jellyfish in the family Rhopalonematidae. They are commonly known as “fire jellies” due to their stinging tentacles. These jellyfish are characterized by their distinctive umbrella-shaped bell, which can range in size from a few centimeters to several meters in diameter. They possess a ring of tentacles around the bell’s edge and a central mouth opening.
Common Names
Phymanthus species are commonly called "fire jellies" or "stinging jellyfish." Some species have specific names, such as the "Florida fire jelly" (Phymanthus pulcher).
Characteristics
The defining features of Phymanthus include:
- An umbrella-shaped bell
- A ring of tentacles around the bell's edge
- A central mouth opening
- A distinctive red or brown coloration
- A potent sting that can cause pain and irritation in humans
Environments
Phymanthus species are primarily found in warm, tropical, and subtropical waters worldwide. They inhabit coastal areas, estuaries, and open oceans. They are often associated with coral reefs and rocky shores.
References
World Register of Marine Species
Jellyfish Facts
Florida Museum of Natural History