Animals A-Z
Moon Jellies
Scientific Name : Aurelia aurita
Status : Least concern
On view at Aquarium in : Jellyfish Corner
The moon jellyfish, often simply called the moon jelly, is one of the most widespread and recognisable jellyfish species. With its translucent, moon-like bell and delicate tentacles, it captivates both wild observers and aquarium visitors alike. Despite its seemingly fragile appearance, the moon jelly is a resilient species, thriving in a wide range of marine environments.

Quick Facts
Did You Know?
- Mild Sting: Unlike some of its more dangerous relatives, the moon jelly’s sting is mild and generally harmless to humans. Their stinging cells, or nematocysts, are used primarily to capture small planktonic prey.
- Simple Yet Adaptable: Moon jellies lack complex organs like a brain or heart. Instead, they rely on a simple nerve net to respond to stimuli and diffuse oxygen through their thin bodies for respiration. This simplicity makes them highly adaptable to various environmental conditions.
- Masters of Reproduction: Moon jellies have a fascinating two-phase lifecycle, alternating between asexual reproduction during their polyp stage and sexual reproduction in their medusa stage. In the polyp stage, they can clone themselves by budding, creating new individuals without mating.
- Survival Experts: Moon jellies are incredibly resilient and can survive in low-oxygen environments where other marine creatures struggle. This adaptability helps them thrive in regions where water quality may be compromised.
- Glowing Illusion: While moon jellies aren’t bioluminescent, their translucent bodies can create a glowing illusion, especially when illuminated by certain lighting or surrounded by bioluminescent plankton in the water, making them an enchanting sight in the ocean.
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