Jellyfish
Jellyfish are invertebrates found in oceans and in some cases fresh water. There are over 200 known species of jellyfish on the planet.1
Fast Facts
- Phylum: Cnidaria
- Class: Scyphozoa
- Over 200 species
- Jellyfish are not fish
- Live in groups called bondamines
- Most live in shallow coastal waters1
- Made of 95% water
- Have been on the planet for over 650 million years
- Related to corals, sea anemones, and the Portuguese man-o-war2
Body
The body of a jellyfish consists of an outer covering known as the epidermis, the inner lining, which produces jelly, is called the gastrodermis. Jellyfish do not have a brain, heart, blood or bones. The gastro vascular cavity functions as a mouth and anus. Their tentacles contain stingers that release venom.2
Jellyfish Stings
Jellyfish stings should be treated immediately. Symptoms include an intense, stinging pain, itching, rash and raised welts. In severe cases coma or death may occur.3
Jellyfish sting as a way to protect themselves from predators.2
Treatment
- Assess pain
- Rinse stingers off with salt water4
- Douse any adherent tentacles with salt water or vinegar4
- Apply a cold wrap or ice for 10-20 minutes4
- Call for medical aid or ambulance4
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