Blue Blubber Jellyfish

Blue Blubber Jelly

Catostylus mosaicus

DID YOU KNOW?

In Asia, this venomous jelly is considered a culinary delicacy.

Exhibit Name and Location:
Baltimore - Jellies Invasion: Oceans Out of Balance

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Blue Blubber Jelly

The blue blubber jelly actually ranges in color from white to light blue to dark purple. Its bell pulses in a distinctive, staccato-like rhythm.

This venomous jelly can be safely eaten once it's been correctly dried and processed. Dried jellies are popular in many Asian countries, especially Japan, where they're considered a culinary delicacy. The texture is reportedly crispy, yet elastic—hence the name "rubber band salad" for a dish sold in China. The Chinese believe eating jellies will reduce high blood pressure.


Blue Blubber Jelly Facts

Diet

Zooplankton

Size

The blue blubber’s bell can be up to 16 inches wide.

Range

Coastal waters of eastern and northern Australia.

Population Status

In the past, jelly populations were kept in check by predators like sea turtles and jelly-eating fish. Due to the reduction of their predators, jelly populations are growing at alarming rates.

Predators

Sea turtles and other jelly-eating animals, such as tuna, sunfish, butterfish, and spiny dogfish, keep the jelly populations in balance. All seven species of sea turtles include them in their diets. The largest sea turtle species, the leatherback, depends on jellies for food. Because jellies are more than 90% water and an adult leatherback can weigh more than 2,000 pounds, one turtle can consume a lot of jellies!

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Jack Cover
General Curator

pressroom striped fish

As the General Curator, Jack's role is to ensure that our living animal collections are thriving and diverse, to best exhibit the beauty of the wild habitats we represent here at the Aquarium. Learn More

A Note From the Caretaker

Blue blubbers often come to us with tiny symbiotic copepods that eat dead tissue off the jelly and usually don’t harm the animal, as long as it is healthy. However, if the animal’s delicate tissue rips even slightly, the copepods begin to feast on the jelly, often leading to its demise. The aquarists work diligently to keep these copepods to a minimum.

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