### Identification Commonly known as the Mosaic Jellyfish, *Anomalorhiza shawi* is a breathtaking sight for any coastal observer. The bell is a robust, shallow dome, typically reaching 30 to 50 centimeters in diameter. Its most striking field mark is the granular, warty texture of the exumbrella (the top of the bell), which is often pale cream or translucent white, occasionally blushing with violet or yellow hues. Unlike many common jellies, it lacks trailing marginal tentacles. Instead, look beneath the bell for eight thick, highly branched oral arms that resemble a dense thicket of cauliflower. These arms are often tipped with delicate, club-shaped appendages that sway as the animal pulses.
### Habitat & Range This species is a specialist of the tropical Indo-Pacific, with its stronghold in the coastal waters of the Philippines. You won't find it in the open abyss; it prefers the nutrient-rich "soup" of shallow bays, estuaries, and mangrove-lined lagoons. It thrives in warm, sun-drenched surface waters where light penetrates deeply, often congregating in areas where tidal currents concentrate plankton.
### Behaviour & Diet The Mosaic Jellyfish is a "rhizostome," meaning "root-mouth." It lacks a single central mouth; instead, it is a living sieve. It feeds by pulsing its bell to pull water through thousands of microscopic pores located on its oral arms. It primarily consumes zooplankton, fish eggs, and tiny larvae. In the field, you’ll notice its rhythmic, powerful contractions—a far more vigorous swimmer than the drifting Moon Jelly. It is often seen in "blooms," where dozens of individuals drift together like a fleet of ghostly umbrellas.
### Fascinating Fact The Mosaic Jellyfish is a floating fortress! If you look closely at the dense thicket of its oral arms, you will often find juvenile trevally or small crabs hitching a ride. These clever commuters hide within the jellyfish's stinging cells for protection, gaining a mobile home and a "bodyguard" that keeps larger predators at bay.