Blue Cannonball
Blue Cannonball Jelly has a spherical shape and a deep blue coloration that creates a strong yet balanced accent in the aquarium. Its compact movement makes it a visually striking yet natural species.
Jellyfish can be purchased in a value bundle with three individuals and accessories (Marine Food, SeaChem Stability, ChemiPure) at a discounted price.
44,34 €
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Detailed description
This jellyfish truly lives up to its name – its firm, rounded body genuinely resembles a marine cannonball. The compact silhouette and deep blue color make it a standout visual element in any aquarium. With every movement, it gives the impression of controlled strength, like a sphere of energy calmly floating through water. Its form is not only iconic—it feels designed by nature to leave an impression.
It originates from the coastal waters of Southeast Asia, where it inhabits warm lagoons, sandy-bottom bays, and the sheltered edges of coral reefs. In its natural habitat, it thrives in slow-moving waters and low-current environments, where it can maintain its unique circular profile without disruption.
Compared to other jellyfish species, it pulses more quickly and compactly, creating a rhythm that feels both energetic and balanced. The movement is steady, even assertive—yet never chaotic. This distinct pacing makes the Blue Blubber appear as though it’s confidently navigating its surroundings, even in still water.
Thanks to its rich, saturated color and steady, self-contained motion, it brings a striking contrast to the typically delicate and ethereal jellyfish species. Its dense shape and uniform movement allow it to function as a dynamic centerpiece—commanding attention, yet harmonizing with its environment.
Whether viewed individually or in a group, this jellyfish embodies a unique harmony of density, structure, and motion. Perfect for aquarists seeking bold presence without aggressive behavior, the Blue Blubber elevates any aquarium into a visual display of rhythmic elegance and aquatic sculpture.

Blue Cannonball
size guide
In adulthood, this species reaches a bell diameter of 4 to 7 cm (1.6–2.8 in), while the tentacles usually measure between 4 and 5 cm (1.6–2 in). Thanks to its rounded form and solid build, it maintains a clear silhouette even at full size.
The jellyfish are always shipped in an early stage of development, allowing you to observe their gradual growth and natural adaptation to the aquarium environment.
Blue Cannonball
Lifespan guide
Under ideal conditions, the Blue Cannonball Jelly can live up to 24 months, making it one of the longest-living species in the collection. Its development is gradual, allowing you to observe its natural growth and changes in movement throughout the entire cycle – from a compact shape to a fully mature form.
A stable environment and balanced routine are key to the long-term vitality of this visually striking yet gracefully subtlespecies.
Caring for
Blue Cannonball
Despite its striking appearance, this species is relatively undemanding – ideal for those seeking a strong visual effect without complex care. It thrives best at a temperature of 20–27 °C (68–81 °F) and in water with salinity around 30–32 ppt, always in a dedicated tank without other species.
It does not sting, making it safe even for beginner aquarists. For feeding, we recommend Marine Jellyfish Food or baby brine shrimps, 3–4× per week. In terms of care requirements, it ranks 2 out of 5 – the ideal balance between visual impact and easy maintenance.

At Ocean’s Clouds, we believe that beauty should flow hand in hand with responsibility. That’s why every jellyfish we offer is bred in a carefully controlled environment — never taken from the wild. Raised under optimal conditions, they grow without stress, mirroring the calm they later bring into your home.
Our aquariums are designed to echo the natural rhythm of the sea. With no sharp edges and a continuous circular flow, they create the ideal habitat for jellyfish to drift, pulse, and glow — just as they would in open waters. It’s a living sculpture that adds silence, softness, and balance to any space.
This is not just about keeping jellyfish. It’s about creating a daily ritual of calm, a connection to the ocean, and a space where science, design, and nature meet. What you see is effortless beauty. What lies beneath is precision, ethics, and years of marine expertise.
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