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.
Geographic 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.
Discover also
Acropora cythereacoral (Acropora cytherea)
Acropora cythereacoral
(Acropora cytherea)
Acropora pulchra coral (Acropora pulchra)
Acropora pulchra coral
(Acropora pulchra)
Bladed fire coral (Millepora complanata)
Bladed fire coral
(Millepora complanata)
Giant caribbean anemone (Condylactis gigantea)
Giant caribbean anemone
(Condylactis gigantea)
Magnificent sea anemone (Radianthus magnifica)
Magnificent sea anemone
(Radianthus magnifica)
Pharaoh coral (Acropora parapharaonis)
Pharaoh coral
(Acropora parapharaonis)
Plumose sea anemone (Metridium senile)
Plumose sea anemone
(Metridium senile)
Sea nettle (Chrysaora fuscescens)
Sea nettle
(Chrysaora fuscescens)
The marine species from Mediterranean sea
Damselfish (Chromis chromis)
Damselfish
(Chromis chromis)
Dusky grouper (Epinephelus marginatus)
Dusky grouper
(Epinephelus marginatus)
European conger eel (Conger conger)
European conger eel
(Conger conger)
Five-spotted wrasse (Symphodus roissali)
Five-spotted wrasse
(Symphodus roissali)
Fried egg jellyfish (Cotylorhiza tuberculata)
Fried egg jellyfish
(Cotylorhiza tuberculata)
Green sea turtle (Chelonia mydas)
Green sea turtle
(Chelonia mydas)
Mediterranean moray eel (Muraena helena)
Mediterranean moray eel
(Muraena helena)
White seabream (Diplodus sargus)
White seabream
(Diplodus sargus)

Our latestUpdates

The olive ridley sea turtle
Monday, August 3rd 2026
The olive ridley sea turtle
Discover the olive ridley sea turtle (Lepidochelys olivacea), the world's most abundant sea turtle, famous for its spectacular mass nesting events, wide tropical distribution, unique behavior, diet, reproduction, and conservation challenges.
Faroe islands
Thursday, May 7th 2026
Faroe islands
Discover the Faroe islands, a remote archipelago between Iceland and Norway known for its dramatic cliffs, colorful villages, and untouched Nordic landscapes. Find travel tips, itineraries, hiking guides, local culture, and inspiration to explore this unique destination in the North Atlantic.
The short-finned pilot whale
Wednesday, May 6th 2026
The short-finned pilot whale
Discover the tropical pilot whale (Globicephala macrorhynchus), a highly social large cetacean from tropical and subtropical waters, specialized in deep dives in search of squid.
Photo of the Day
Poulpe géant du nord du Pacifique (Enteroctopus dofleini)
Poulpe géant du nord du Pacifique
(Enteroctopus dofleini)