Touching Moon Jellies at the Aquarium of the Pacific
Sea jellies technically are not fish. They are 95 percent water, have no heart, brain, or lungs, and are planktonic, drifting with currents, unable to swim against them. They have been on Earth for at least 500 million years. Jellies are eaten by many different kinds of fish and sea turtles, so they have an importance within a healthy, well-balanced ecosystem.
At the Aquarium of the Pacific, we had the opportunity to touch moon jellies! The part of their body that I am touching in this picture has no stinging cells. Instead, their tentacles and stinging cells or nematocysts are located around their bell, and help them to capture their food. Species, like moon jellies, that consume very small organisms, such as zooplankton and brine shrimp, do not have a sting that can be easily felt by humans. If you feel anything at all it may be just a slight stickiness.