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Jan 6 2011 - 1:03pm
Atolla tenella, a midwater scyphomedusa, as seen under a microscope. View the “Under Arctic Ice” photo essay to learn more.
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Feb 28 2013 - 3:37pm
Jellyfish and comb jellies are gelatinous animals that drift through the ocean's water column around the world. They are both beautiful—the jellyfish with their pulsating bells and long, trailing tentacles, and the comb jellies with their paddling combs generating rainbow-like colors. Yet though...
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Mar 12 2013 - 7:35am
Stinging cells (nematocysts) line the tentacles of this moon jelly (Aurelia aurita). Upon contact with prey or a predator, a venom-laden harpoon shoots out to stun or kill. Read more about jellyfish anatomy in our jellyfish and comb jellies overview page.
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Aug 3 2010 - 12:11pm
The ROV Hyper Dolphin caught this deep-sea jelly (Atolla wyvillei) on film east of Izu-Oshina Island, Japan. When attacked, it uses bioluminescence to "scream" for help—an amazing light show known as a burglar alarm display. Visit the Encyclopedia of Life to learn more about these wild jellies.
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Mar 22 2011 - 10:24am
A still from Journey of the Universe, part of the 19th Annual Environmental Film Festival in the Nation's Capital.
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Oct 14 2010 - 5:25pm
Corals are just one of the many marine life forms that can be modeled in crochet. Jellyfish, like the one pictured here, starfish, sea snails, and kelp are some of the other organisms that contributors to the Institute For Figuring’s Hyperbolic Crochet Coral Reef have created over time.
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Jan 26 2010 - 11:45am
A fringe of short tentacles surrounds the flattened bell of this tiny, transparent jellyfish (Halicreas minimum), which can be found at depths up to 984 feet (300 meters). But it would be hard to spot: the bell grows up to just 4 centimeters (2 inches) across! See more deep ocean diversity and...
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Apr 12 2013 - 11:29am
How long have jellyfish lived in the ocean? This jellyfish fossil is from the Cambrian period, more than 500 million years ago. It was found buried in Utah—an area that used to be underwater, covered by the ocean. Fossil jellyfish are rare because they have no bones or other hard parts to turn into...
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Jan 7 2011 - 3:53pm
Using an ROV (Remotely-Operated Vehicle) equipped with a high-definition video camera, scientists can observe the life that flourishes beneath the Arctic ice. On this expedition, they discovered creatures, like this Narcomedusa jelly, that were previously unknown.
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May 2 2013 - 9:29am
This venomous box jelly (Chiropsalmus quadrumanus) was collected off the coast of South Carolina. The specimen now resides in the Smithsonian’s marine collection. It's venomous sting can be lethal, especially to small children.
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Nov 29 2010 - 6:48pm
All over the world, people have been witnessing gigantic blooms of tens of thousands of jellyfish where once there were only a few. Fishers find them clogging their nets and costing them dearly. In Japan, giant jellyfish capable of reaching six feet across even capsized a boat that tried to bring...
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