No one gets left behind in a colony of jellyfish-like animals that organize their swimming to produce a single moving unit.
When jellyfish lose limbs, they don't regrow them. Instead, they rearrange their entire bodies to stay symmetrical.
Researchers were startled to find fish, crustaceans and jellyfish near a submersible camera after drilling through nearly 2,500 feet of Antarctic ice.
No brain? No problem for jellyfish, which turn out to be more aggressive than passive, at least in terms of their swimming.
This year certainly held its own when it came to the describing of deeply odd animals. From a cavefish with its anus directly behind its head, to a marsupial whose males mate furiously until they die of stress, 2014 had something for everyone.
Researchers catch a glimpse of a purple-tinged siphonophore drifting along the sea floor.
Catch a glittering glimpse of photos from the most complete audit yet taken of marine life in the Antarctic Ocean.
One is surprisingly large. The other is tiny. Both are extremely venomous.
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