Sealife guideThe moon jellyfishAurelia aurita

Last updated on 09/02/2024 at 11:51 PM
Taxonomy
  • Common name: Moon jellyfish
  • French name: Méduse bleue, méduse lune, aurélie
  • Scientific name: Aurelia aurita (Linnaeus, 1758)
  • Family name: Ulmaridae
  • Order name: Semaeostomeae
  • Class name: The scyphozoans [Scyphozoa]
Description
The moon jellyfish has a flattened bell shape that averages about 12 inches in diameter. The bell has a regular shape with a scalloped edge.
The coloration of the moon jellyfish ranges from bluish to pinkish
The coloration of the moon jellyfish ranges from bluish to pinkish © | Dreamstime.com
The moon jellyfish is generally translucent, but its color can vary and take on a slightly bluish or pinkish hue depending on its age and diet.
Range
The moon jellyfish is a common species found in temperate and tropical coastal waters of seas and oceans around the world. It is particularly found in the coastal waters of Northern Europe, the Caribbean sea, and the Red sea.
Habitat
Like all jellyfish, the moon jellyfish drifts with the currents and can be found along coastlines.
Diet
The moon jellyfish primarily feeds on small planktonic organisms and fish larvae, which it captures with its tentacles as it drifts with the currents.
Reproduction
The moon jellyfish has different forms of reproduction that include various developmental stages, such as larval planktonic forms and polyps, before taking its adult jellyfish form.
It can reproduce sexually by releasing male gametes into the seawater, which then fertilize the gametes still held by the female jellyfish. The fertilized eggs remain attached under the bell of the female jellyfish and develop into planktonic larvae.
Did you know ?
The moon jellyfish is capable of producing a faint bioluminescent glow in the dark. This bioluminescence is due to the presence of specific proteins in its jelly, allowing it to attract prey or defend itself against predators.
The moon jellyfish (Aurelia aurita)
The moon jellyfish (Aurelia aurita)
Due to climate change, jellyfish blooms, which are proliferations of jellyfish, occur regularly in certain regions of the world, and the moon jellyfish is one of the species responsible for these blooms, particularly in Northern Europe, where it is widespread.
Explore also
Magnificent sea anemone (Radianthus magnifica)
Magnificent sea anemone
(Radianthus magnifica)
Acropora cythereacoral (Acropora cytherea)
Acropora cythereacoral
(Acropora cytherea)
Elkhorn coral (Acropora palmata)
Elkhorn coral
(Acropora palmata)
Lion's mane jellyfish (Cyanea capillata)
Lion's mane jellyfish
(Cyanea capillata)
Sea nettle (Chrysaora fuscescens)
Sea nettle
(Chrysaora fuscescens)
Many-ribbed jellyfish (Aequorea forskalea)
Many-ribbed jellyfish
(Aequorea forskalea)
Fried egg jellyfish (Cotylorhiza tuberculata)
Fried egg jellyfish
(Cotylorhiza tuberculata)
Purple-striped jelly (Pelagia noctiluca)
Purple-striped jelly
(Pelagia noctiluca)
The marine species from Mediterranean sea
Black sea urchin (Arbacia lixula)
Black sea urchin
(Arbacia lixula)
Blue spiny starfish (Coscinasterias tenuispina)
Blue spiny starfish
(Coscinasterias tenuispina)
Cardinalfish (Apogon imberbis)
Cardinalfish
(Apogon imberbis)
Dusky grouper (Epinephelus marginatus)
Dusky grouper
(Epinephelus marginatus)
Forkbeard (Phycis phycis)
Forkbeard
(Phycis phycis)
Green sea turtle (Chelonia mydas)
Green sea turtle
(Chelonia mydas)
Marine peacock's tail (Padina pavonica)
Marine peacock's tail
(Padina pavonica)
Purple gorgonian (Paramuricea clavata)
Purple gorgonian
(Paramuricea clavata)

Our latestUpdates

The princess parrotfish
Thursday, August 7th 2025
The princess parrotfish
The princess parrotfish stands out with a coloration fit for a princess, featuring a dominant bluish hue, with yellow along the central part of its body near the pelvic fins, transitioning into green. Two blue bands run across its head on either side of its eyes.
The batwing coral crab
Monday, August 4th 2025
The batwing coral crab
Discover the batwing coral crab, an iconic species of Caribbean coral reefs, recognizable by its smooth red shell speckled with white and cream.
The spanish hogfish
Thursday, July 31st 2025
The spanish hogfish
The spanish hogfish is known for its vibrant colors, featuring a bright yellow body with a bluish to purplish area along its back. It inhabits the tropical and subtropical waters of the western Atlantic ocean, from southern Florida to Brazil, including the Gulf of Mexico and the Caribbean sea.
Photo of the Day
Cordonnier plume (Alectis indica)
Cordonnier plume
(Alectis indica)