Jellyfish Lake is "jam"-packed with these golden Jellyfish.  There are millions.

Individuals ascend periodically towards the surface when the sun comes out, and then sink back into the horde.

(Jellyfish Lake, Palau, Micronesia)

cnidarian; true jellyfish; golden jellyfish; Cnidaria; sP Medusozoa; Scyphozoa; sC Discomedusae; Rhizostomeae; Mastigiidae; Mastigias cf. papua etpisoni