The Moon Jelly (Aurelia aurita) is one of the most recognizable jellyfish in the world, known for its delicate, translucent bell and four distinct horseshoe-shaped gonads visible at its center. Common in coastal waters across temperate and tropical regions, moon jellies drift gracefully with ocean currents, relying on rhythmic pulsations of their bell to navigate their environment. You can find them even in places like Deep Cove, not far from the Aquarium. 

Moon jellies feed primarily on plankton, including small crustaceans, fish larvae, and other microscopic organisms. Their tentacles and oral arms are lined with specialized cells called nematocysts, which deliver mild stings that help capture prey. While these stings are generally harmless to humans, they play an essential role in the moon jelly’s ability to thrive in diverse marine habitats.

This species has a fascinating life cycle that alternates between two distinct stages: a free-swimming medusa (the classic jellyfish form) and a stationary polyp.

Because moon jellies respond sensitively to changes in water quality and temperature, they serve as valuable indicators of ocean health. Studying them provides insight into marine ecosystems, climate trends, and the delicate balance of life within our oceans.

Head over to the Canaccord gallery near the 4D theatre and the Wet Lab to see these moon jellies.