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Upside-down Sea Jelly

Cassiopeia andromeda


These sea jellies are found in shallow waters of lagoons, mangroves and mudflats, usually on sand and mud bottoms. They lie on their backs and so look more like sea anemones, and hence their name! They feed on zooplankton, and their bells (bodies) grow to a diameter of 30cm. The sting of their tentacles is quite mild.


Found at depths of 0 to 30m; circumtropical distribution.


Spotted this jellyfish in less than 30ft of water at the Angel's Cove dive site, Talikud Island. It measured about a foot in diameter.

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LaurenZarate 6 years ago

Love the name too. My son is studying Marine Biology at UC Santa Barbara. I love all your Spottings and the Nudibranchs are breathtaking. What do you think of this creature that is supposedly unclassifiable?(

LaurenZarate 6 years ago

That is soooo cool! The video too. It has great camouflage when it settles.

Kellyspubvista 8 years ago

AWESOME!!! Love your spottings!

Maria dB
Maria dB 8 years ago

Great spotting and nice video!

Beautiful !

Leuba Ridgway
Leuba Ridgway 8 years ago

great video Blogie -thanks.

Blogie 8 years ago

Thanks for the comments & the favorites! :)

CarolSnowMilne 8 years ago

Great video and matches the sea floor perfectly!

CarolSnowMilne 8 years ago

WOW! I haven't seen one or even heard of one before. Fantastic!

C.Sydes 8 years ago


NuwanChathuranga 8 years ago

great spot !!

Spotted by

Davao Del Norte, Philippines

Spotted on Oct 26, 2012
Submitted on Oct 31, 2012

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