Fried Egg Jellyfish

(Phacellophora camtschatica)

This jellyfish can reach a diameter of 40 cm but is usually less than 17 cm wide. It seems that this jellyfish's sting has very little or no effect on humans.

The fried Egg Jellyfish has symbiotic relationships with larval crabs, in which the crabs feed on the parasitoid Amphipoda that also resides on the bell of the jellyfish. This helps the jellyfish by keeping the parasites under control. Larval crabs benefit from this relationship by riding on the bell of the medusa to gain food and develop faster due to movement through warmer surface waters without wasting extra energy.

Mauve stinger

This fairly small jellyfish (bell diameter of 3–12 cm) pack a powerful punch in their sting.

Their colour is variable, ranging from mauve, purple, pink, light brown to yellow. The body is radially symmetrical. There is only one body cavity known as the gastrovascular cavity. This is a primitive gut or digestive cavity with only one opening that is used for ingestion and excretion; there are four long oral arms Each medusa has eight long tentacles that emerge from the umbrella margin.

Mauve stingers are bioluminescent, that is they have an ability to produce a low light that is visible to humans during the night. Light is emitted in the form of flashes when the medusa is stimulated by turbulence created by waves or by a ship's motion.

Besides stingers on its tentacles, the mauve stinger also has stinging cells on the bell head which is very unusual.

The sting causes pain that typically lasts 1–2 weeks, local redness, swelling and a rash, but it is generally not dangerous and there are no known fatalities.