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Extreme diver Norbert Wu's Journey into the Antarctic underworld: Showing a medusa or jelly (Desmonema glaciale). It lives near the surface and the bell can reach over one meter in diameter. It is incredibly intricate and beautiful though.
Pelagia noctiluca, (Águilas, Spain) by Alfonso Gonzalez: In Latin, Pelagia means "of the sea", nocti stands for night and luca means light and As its name implies P. noctiluca has the ability to bioluminesce. Light is given off in the form of flashes when the medusa is stimulated by turbulence created by a ship’s motion or by waves. This flashing is only of relatively short duration and gradually fades. en.wikipedia.org/... #Jellyfish