Jellyfish & Cnidarians

Cnidarians are invertebrates with stinging cells called nematocysts. Included in the cnidarian group are anemones, corals, and jellyfish

A nematocyst is a cell that contains a coiled-up venomous barb. When touched, the barb is discharged into the skin of the prey and the venom is released.

Although a nematocyst is microscopic, when thousands of these are discharged into the skin, their effect can be dangerous or even deadly. Some of the most deadly animals in the world are the box jellyfish.

Things To Know


Featured Animal: Moon Jellyfish

Moon Jellyfish can be found in the coastal Pacific seas all around the Ring of Fire. While they have four feeding tentacles, tens of thousands of stinging cells and five stomachs, they have no bones, nervous system, brain or muscles, are 97% water, and nobody knows how they move!

The hundreds of Moon Jellyfish in the Ring of Fire: World of the Octopus exhibit will be born and raised at the aquarium by our animal care experts!

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