January at Great Barrier Reef, 3-6 inches in diameter, looked like a billowy dress/skirt and didn’t have long tentacles. Thanks!

I saw this a couple of years ago and just stumbled across the pic. Never saw one before, or again after this. I'm very curious now if they're common. I'm in North Island New Zealand, east coast.

i got a christmas gift from a relative of a taxidermy jellyfish, but there was no information of what kind of jellyfish it is. tried looking around but didn’t find too much- can anyone tell me what kind it may be? looks very similar to this one but i don’t have a photo of mine specifically.

Found this guy washed ashore on Whitehaven Beach on Whitsunday Island, Queensland.

I am considering adopting a Moon Jellyfish or two and would like to ensure I am fully prepared to provide the appropriate environment and care for them. I am aware that jellyfish have specific needs that differ significantly from traditional aquarium fish, and I want to approach this responsibility with the necessary knowledge and resources.

I would greatly appreciate recommendations for reliable tank setups and advice from those with experience caring for these beautiful creatures.

I have quite a few questions just to double check my research and hear others experiences with them if that's alright.

Are there specific brands or models of tanks you have found effective for Moon Jellyfish specifically?

Are there starter kits that provide the essential components (filtration, lighting, etc.)? If possible, and if you can on here, I would appreciate link recommendations, whether it be from Amazon or pet specific stores feel free to let me know.

What is the optimal tank size for housing 1-3 Moon Jellyfish? What size have you found comfortable for you and your jellyfish?

What methods or tools do you recommend for maintaining water quality and salinity? Are there particular water testing kits that you find reliable?

What lighting setups are ideal for Moon Jellyfish, both for their well-being and aesthetic display? Should LED lighting be introduced gradually to avoid stress, and could it potentially disrupt their natural cycles if introduced too quickly or strongly?

How can I ensure the tank’s water flow is gentle enough for them? Should the tank remain minimal, or can it accommodate specific decorative elements? What kind of accessories did you install and how has your jellyfish reacted to such a thing?

What are the best feeding routines and food sources for Moon Jellyfish? I have an idea of frozen brine shrimp, but I'm wondering if there's something better to feed them or higher quality?

Are there any key maintenance practices you would recommend for keeping the tank and jellyfish healthy and strong?

Are there any common challenges or mistakes new jellyfish owners should be aware of? Is there anything you wish you had known before caring for jellyfish?

I want to approach this responsibly and ensure that I can provide the right environment for a Moon Jellyfish to thrive happily. I believe jellyfish are the most stunning and interesting creatures, I've always wanted to own one. I also wanted to show my girlfriend one outside of an aquarium, since that's how I first got introduced to them.

Any advice or insights you could share would be invaluable. Thank you in advance for your time and assistance.

Apologies if this isn't the most helpful picture, I was a little afraid to touch it as I'm quite new to looking for jellyfish. I've tried googling but couldn't find very much about the species in my area.

Also, I'm just wondering - I saw a few others like this. Is there a way to tell if they're still alive or are they generally dead as soon as they're washed up? I'd like to return them to the sea and help them survive if there's a chance. Makes me sad to see so many washed up :(