Lagoon Jelly
From Openwaterpedia
noun - Lagoon Jelly (Mastigias papua0 is one of seven lagoon jelly species in the genus Mastigias that also have the species name papua. This species, which is sometimes called the Papua jelly, is most abundant in both numbers and diversity in lagoons and lakes in Palau. Based on DNA studies, scientists have proposed naming five subspecies of M. papua that inhabit Palau’s Jellyfish Lake. Lagoon jellies obtain part of their energy from symbiotic zooxanthellae (algae) that live in their tissues and part from preying on phytoplankton and zooplankton.