April12011
Red Medusa Jellyfish (Atolla wyvillei)

The jellyfish Atolla lives worldwide in the deep sea, where light levels are very low. The jellyfish is bioluminescent—emitting  blue-green light—and so are most of its prey. Scientists think that the  deep red color of the animal’s stomach serves a purpose­—to keep the  blue light of its luminescent lunch from escaping and giving away Atolla’s location to its own predators.  It is distinguished by a larger size (up to 15 cm), 8 oval-shaped gonads in pairs, more tentacles (usually 22, but ranging from 20 to 36), and more uniform red coloration of the bell (although some individuals may lack this pigmentation.)

Red Medusa Jellyfish (Atolla wyvillei)

The jellyfish Atolla lives worldwide in the deep sea, where light levels are very low. The jellyfish is bioluminescent—emitting blue-green light—and so are most of its prey. Scientists think that the deep red color of the animal’s stomach serves a purpose­—to keep the blue light of its luminescent lunch from escaping and giving away Atolla’s location to its own predators. It is distinguished by a larger size (up to 15 cm), 8 oval-shaped gonads in pairs, more tentacles (usually 22, but ranging from 20 to 36), and more uniform red coloration of the bell (although some individuals may lack this pigmentation.)

March212011
Giant Bell Jelly (Scrippsia Pacifica)

Scrippsia is occasionally found at the surface in Monterey Bay, often in poor condition, but is more an inhabitant of deep, offshore waters.  The giant bell jelly is never found in the shallow nearshore habitats favored by Polyorchis.  It has been seen from Baja California to northern California.

Giant Bell Jelly (Scrippsia Pacifica)

Scrippsia is occasionally found at the surface in Monterey Bay, often in poor condition, but is more an inhabitant of deep, offshore waters.  The giant bell jelly is never found in the shallow nearshore habitats favored by Polyorchis.  It has been seen from Baja California to northern California.

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