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What’s a Moon Jellyfish?


Moon jellies have a particular place in my coronary heart. As soon as on a household trip, we wrapped up a hike at Acadia Nationwide Park to search out tons of of moon jellies floating close to the shore. It was a magical sight. It felt as if we had crossed over into some alien dimension, the rocky shoreline remodeled right into a sea full of these other-worldly creatures.

What do moon jellyfish appear like?

Moon jellyfish get their title from their translucent bell-shape that appears a bit like a full moon. They’re greatest recognized by 4 purple glowing circles on the highest that loop round in a clover-like formation. They’ve quick wispy tentacles that grasp beneath and have a tendency to drift just under the floor of the water.

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Can they sting me?

Moon jellyfish can sting with their tentacles. Don’t let this scare you away from these stunning creatures! Their sting has little impact on people past slight discomfort and a rash that may final only some hours.  However when you occur to be a plankton or mollusk that has discovered to learn and located entry to the web, nicely, I’ve dangerous information: That jellyfish sting goes to immobilize you to grow to be the jellyfish’s subsequent meal. Study extra about how jellyfish sting.

How do moon jellyfish transfer?

Jellyfish don’t want fins or skeletons to swim; they use their bells. They’re able to create a pocket of water to undertaking themselves. As a moon jellyfish opens and contracts its bell, it creates a vortex, a number of vortices, the truth is, that create a high-pressure wall of water that turns into its runway to blast off. Scientists are finding out this distinctive methodology of locomotion to encourage the methods future underwater robots may transfer.

What eats moon jellyfish?

Moon jellyfish are thought-about a tasty snack by all types of turtles, birds and fish. Their clear gelatinous construction may not look nutritious, however moon jellyfish include some fatty acids essential to development and copy. Plus, they’re fairly gradual, making it simple for his or her predators to have a lazy afternoon lunch.

Moon jellyfish in SPACE?

Sure, dwelling as much as their lunar namesake, moon jellies took a visit to house! In 1991 NASA launched over 2,478 jellyfish polyps (a.okay.a. jellyfish infants) on a visit that was out of this world. They needed to see how being raised in a low gravity scenario would change jellyfish habits as soon as they have been again on Earth. This would offer insights on how human house infants is likely to be affected since each jellyfish and people want gravity to orientate themselves. There are calcium sulfate crystals in a moon jellyfish’s bell that transfer with gravity, telling the jellyfish whether or not it’s transferring up or down. We people even have calcium crystals in our inside ears that assist us perceive gravity’s pull. Seems the house jelly infants (which must be the title of the subsequent Muppet film) did prove to have points navigating on Earth after being raised in a spot with out gravity.

As Elton John informed us in “Rocket Man,” house “ain’t the type of place to boost your youngsters.”

The put up What’s a Moon Jellyfish? appeared first on Ocean Conservancy.

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