Upsidedown Jellyfish GALLERY

Cassiopia frondosa

These Jellyfish can be found most often in open areas of sand and sea grass beds. I've only seen then in water deeper than 10 feet, except occasionally juvenile discs. They differ from the Mangrove Upsidedown Jellyfish by the length of the oral arms. This jellyfish's arms are much shorter without the long leaf shaped appendages that the Mangrove's does, giving them a more refined appearance. Instead of spending their lives swimming about, they lay upside down letting the sun help speed the growth of zoozanthellae (symbiotic single cell algae) upon which they obtain some of their nourishment. They are mildly toxic.