Periphyllopsis braueri is a red-colored jellyfish of the deep sea,[1] belonging to the order Coronatae of the phylum Cnidaria.

It has only been documented ~18 times[2] because of the depth that it resides at, and inhabits areas off the coast of Florida and Japan.

[1] Like several related species, Periphyllopsis braueri is capable of bioluminescence.

In response to stimulus, it emits rapidly pulsating light from multiple sites, and expels luminous material into the water.

[3] The seven-arm octopus, Haliphron atlanticus, has been observed to prey on Periphyllopsis braueri.