
Greater Moon Jelly
aurelia labiata
The Greater Moon Jelly (Aurelia labiata) is a mesmerizing marine drifter commonly found along the Pacific coast of North America. Renowned for its translucent, saucer-like bell and graceful pulsations, this cnidarian captivates beachgoers and divers alike. Unlike typical jellyfish, Aurelia labiata possesses a highly distinctive scalloped bell margin divided into sixteen distinct lobes, giving it a beautifully complex, flower-like appearance as it drifts through temperate coastal waters. These gentle giants are often seen gathering in large aggregations called blooms. They rely on oceanic currents to travel while using their delicate, stinging tentacles to capture tiny planktonic prey. While their venom is generally harmless to humans, they play a crucial role in marine food webs, serving as a vital food source for sea turtles and larger predatory jellyfish species. Spot a Greater Moon Jelly? Identify it instantly with the Snappit nature app.
Habitat: Found in coastal waters, fjords, and sheltered bays along the North American Pacific coast, often close to the surface or near marinas and docks.
Appearance
This species is characterized by a translucent, saucer-shaped bell that ranges from milky white to soft shades of pink or lavender. Its bell margin features sixteen prominent scallops or indentations, which distinguishes it from other closely related moon jellies. Looking closely at its center, one can spot its horseshoe-shaped reproductive organs, typically arranged in four distinct pale yellow or pink loops. Flung beneath the bell are four long, frilly oral arms used for feeding, surrounded by a fringe of short, fine, hair-like tentacles.

Category
AnimalRarity
Common
Danger
1/5 Β· Very low
Snaps
Be the first to snap!
Interesting facts
The Greater Moon Jelly has sixteen scalloped lobes along its rim, twice as many as the more widely known common moon jelly (Aurelia aurita).
They are made of over 95% water and lack a brain, heart, blood, or gills, relying instead on oxygen diffusing directly through their thin skin.
Under stressful conditions or starvation, moon jellies can shrink in size and revert to a younger state to survive.
Special abilities
Pulsating Propulsion
By contracting its circular muscles, the jelly expels water from beneath its bell to propel itself forward, creating currents that pull tiny planktonic prey toward its tentacles.
Four-Lobed Feeding Network
It utilizes four frilly oral arms coated in sticky mucus to transport captured plankton directly from its marginal tentacles to its central mouth.
Regenerative Healing
If damaged by predators or rough surf, this species can rapidly regenerate lost body parts and restore its symmetrical structure within days.
Measurements & details
- Length
- 15+ cm
- Weight
- 0.1+ kg
- Lifespan
- 1+ years
- Clutch Size
- 10000+
- Incubation
- 3+ days
Diet & Feeding
Feeds opportunistically on microscopic zooplankton, copepods, larval fish, and other small drifting organisms.
Age differences: The benthic polyp stage feeds on small suspended organic particles, while the swimming mature medusa stage captures larger zooplankton and small fish larvae.
Primary Foods
- Copepods
- Larval fish
- Mollusk larvae
- Rotifers
- Invertebrate eggs
Foraging Method
- Passive Drift
Ecological connections

Leatherback Sea Turtle
Dermochelys coriacea
Adult moon jellies are a primary, moisture-rich food source for migrating leatherback turtles.
Egg Yolk Jellyfish
Phacellophora camtschatica
This larger predatory jellyfish actively hunts and consumes Aurelia labiata in the Pacific Northwest.

Pacific Herring
Clupea pallasii
Greater Moon Jellies feed heavily on the floating eggs and newly hatched larvae of the Pacific herring.
Traits
No trait badges are assigned for this object yet.
Also known as
No aliases listed yet.
Collections
Collections for this object will appear here as more themes are added.
Safety
Danger
1/5 Β· Very low
No special safety notes yet.
Frequently Asked Questions
How to identify Greater Moon Jelly?
The easiest way to identify Greater Moon Jelly is to use the Snappit nature identifier app.
How long is Greater Moon Jelly?
15+ cm
How much does Greater Moon Jelly weigh?
0.1+ kg
How long does Greater Moon Jelly live?
1+ years
What does Greater Moon Jelly eat?
Feeds opportunistically on microscopic zooplankton, copepods, larval fish, and other small drifting organisms.
Where is Greater Moon Jelly usually found?
Found in coastal waters, fjords, and sheltered bays along the North American Pacific coast, often close to the surface or near marinas and docks.
How does Greater Moon Jelly hunt?
Passive Drift
How many eggs does Greater Moon Jelly lay?
10000+
Snap Map
Zoom in to split clusters and explore where this object has been snapped.
Recent Snaps
Recent snaps will appear here as new observations are added.
Where to spot
.jpg)
California, US
Sunset State Beach
You might spot Long-Billed Curlew, Snowy Plover, and Sanderling.
View guide β

British Columbia, CA
Gabriola Sands Provincial Park
You might spot Red Rock Crab, Dungeness Crab, and Salal.
View guide β

British Columbia, CA
Sechelt Inlets Marine Provincial Park - Kunechin Point Site
You might spot Leather Star, Mottled Star, and Harbor Seal.
View guide β

Washington, US
East Park
You might spot Horned Nudibranch and Madrone Skin Miner.
View guide β

