u/Jellyfish_Compendium

These are Rhopilema asamushi, sometimes known as ice jellyfish or sand jellyfish. They’re closely related to the more commonly known flame jelly (Rhopilema esculentum). In fact, at one point in time they were considered to be the same species. A deeper look into their morphology and genetics revealed that they were indeed separate species.

The ice jellyfish starts out clear and turns a sandy beige color as they age. Some species seem to turn an icy blue color when they reach a certain size or age.