Planet Earth

The Strange Gelatinous Beauty of Jellyfish

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Photo Credits: George Matsumoto (c) MBARI

Medusa jellies are shaped like disks or bells, with a fringe of stinging tentacles. Most jellies range from 1 to 6 inches in diameter.

Photo Credits: (c) MBARI

Aeginura grimaldii is a narcomedusa, typically found at depths of 1000 meters or more. Very little is known about the natural history of this beautiful jellyfish.

Photo Credits: George Matsumoto (c) 1989 MBARI
Photo Credits: George Matsumoto (c) 2000 MBARI

a deep water jelly in Monterey Bay - or an alien spacecraft?

Photo Credits: (c) MBARI

Some siphonophores in the species Praya are probably the longest animals in the world. Their long tails or "stems" may grow up to 50 meters long - longer than a blue whale! They can be very abundant at times and may be top predators in some midwater food chains.

Praya's long stem is covered with cells that have specialized for reproduction (gonozooids), feeding (gastrozooids), and stinging (dactylozooids). Groups of cells that break off can sometimes form entirely new animals..

Photo Credits: Kevin Raskoff (c) 1999 MBARI
Photo Credits: (c) 2002 MBARI
Photo Credits: (c)MBARI
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