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Latest Cnidaria Stories

Cyro Jellyfish Robot Swims Autonomously
2013-03-28 18:55:37

[ Watch the Video: Autonomous Robotic Jellyfish ] Lee Rannals for redOrbit.com — Your Universe Online Researchers from Virginia Tech College of Engineering have created an autonomous robotic jellyfish the size and weight of a grown man. Cyro is a larger model of a robotic jellyfish the team unveiled back in 2012 dubbed RoboJelly, which was about the size of a man's hand. The latest robotic ocean dweller is 5-foot-7-inches in length and weighs 170 pounds. "A larger vehicle...

Investigating Coral Speciation And Adaptation
2013-02-07 19:34:01

Brett Smith for redOrbit.com — Your Universe Online When Darwin first formed his theory of evolution, he noted how physical isolation due to geographic barriers could result in the development of specialized adaptations. These novel adaptations were then selected and passed on to future generations. Eventually a new species would evolve. While many researchers are focused on how physical barriers and isolation can lead to new species on land, a pair of LSU biologists are more...

Looking For The Origin Of Muscles
2012-06-28 10:31:20

Nature: Central components of muscles of higher animals much older than assumed A characteristic feature of most animals is their ability to move quickly with the help of their musculature. Animals that can move are able to flee, hunt for prey, travel long distances or conquer new habitats. The evolution of muscles was thus a fundamental step during animal evolution. While the structure and function of muscles, especially of vertebrates, have been intensively studied, the evolutionary...

Robotic Jellyfish Fuses Hi-Tech Materials With Nature’s Elegant Design
2012-03-21 13:56:08

In an article published Wednesday, a team of Navy-sponsored researchers outlined an in-the-works project for a robotic jellyfish that is able to propel itself through water by harnessing the latent power of the ocean. Humorously dubbed 'Robojelly', scientists say that the plans for the mechanical Cnidarian were hatched with a very serious purpose in mind: Researchers say they hope the experimental gizmo will eventually be used to assist emergency teams in dangerous underwater rescue...

2012-03-05 23:20:08

New research from the University of California shows how the ability to detect light could have evolved before anything like an eye. As published today (March 5) in the journal BMC Biology, the research is based on the stinging mechanism in the tiny, brainless and eyeless freshwater polyp Hydra magnipapillata. Part of a group of animals called cnidarians that includes sea anemones, corals and jellyfish, a hydra is essentially a mouth surrounded by tentacles armed with stinging cells, or...

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2010-12-13 11:09:10

A study carried out over 50 years by an international team, with the participation of the Balearic Oceanography Centre of the Spanish Institute of Oceanography (IEO) has confirmed an increase in the size and intensity of proliferations of the jellyfish Pelagia noctiluca. There are several complex reasons for this - over-fishing and the current increase in sea water temperatures. "Since 2002, these organisms have become increasingly frequently found in the north east Atlantic in winter, since...

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2010-10-30 08:12:44

Researchers have been working to figure out how jellyfish may benefit from marine ecosystems weakened by climate change and overfishing.Experts and scientists are concerned that an increase in jellyfish populations could prevent depleted fish stocks from recovering to historical levels.European scientists, however, say more data is needed to identify what is happening beneath the sea.Researchers from Ireland and the UK, who have been collecting samples from the Irish Sea since 1970, said they...

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2010-03-11 15:35:45

By studying the hydra, a member of an ancient group of sea creatures that is still flourishing, scientists at UC Santa Barbara have made a discovery in understanding the origins of human vision. The finding is published in this week's issue of the Proceedings of the Royal Society B, a British journal of biology. Hydra are simple animals that, along with jellyfish, belong to the phylum cnidaria. Cnidarians first emerged 600 million years ago. "We determined which genetic 'gateway,' or ion...

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2009-11-19 08:39:05

Research could help lead to antivenoms and treatments With thousands of stinging cells that can emit deadly venom from tentacles that can reach ten feet in length, the 50 or so species of box jellyfish have long been of interest to scientists and to the public. Yet little has been known about the evolution of this early branch in the animal tree of life. In a paper published November 18 in the Proceedings of the Royal Society, NOAA researchers Allen Collins, Bastian Bentlage and Cheryl Lewis...

2009-04-02 15:23:43

Since the days of Charles Darwin, researchers are interested in reconstructing the "Tree of Life", and in understanding the development of animal and plant species during their evolutionary history. In the case of vertebrates, this research has already come quite a long way. But there is still much debate about the relationships between the animal groups that made their apparation very early in evolutionary history, probably in the late Precambrian, some 650 million years ago. An...


Latest Cnidaria Reference Libraries

Warty Comb Jelly, Mnemiopsis leidyi
2014-01-05 00:00:00

The Warty Comb Jelly (Mnemiopsis leidyi), also known as the Sea Walnut, is a species of tentaculate ctenophore originally native to the western Atlantic coastal waters. Three species of Mnemiopsis have been named, but are now generally categorized as different ecological forms of the species leidyi. This species tolerates a wide range of salinity (2 to 38 psu), temperature (36 to 90 degrees F), and water quality. This creature was introduced in the Black Sea in the 1980s, where only one...

601px-Echinophilia
2012-04-03 19:33:28

Chalice Corals, are a family of stony corals in the Pectiniidae family. Members of this family are mostly colonial but at least one species, Echinomorpha nishihirai, is solitary. These corals are endemic to the Indian and Pacific oceans. Pectiniids have a number of different forms but are basically streamlined and smooth. Polyps are large and brightly colored and resemble those of members of the Mussidae family of corals. The polyps are only extended at night. Tentacles are translucent,...

800px-Fungia_Corals
2012-04-03 16:04:02

Fungia scruposa is a species of mushroom coral that lives a single individual rather than as a colony. It starts out life as a small disk attached to dead coral or rock, but by the time it reaches about 1 inch in diameter, it becomes detached. The adult has a single polyp that reaches up to 10 inches in diameter. This is the first species of coral that has been observed eating jellyfish. While most of its diet consists of bacteria and mesozooplankton, it does take larger marine life,...

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2009-06-18 16:17:45

The Black Sea nettle (Chrysaora achlyos) or sometimes known as the Black jellyfish is known for its dark coloration. This species of jellyfish is found in the Pacific Ocean. There have been reports or sighting of the black jellyfish as for north as British Columbia but its range is mostly thought to be from the north in Monterey Bay, to the southern shores of Baja California and Mexico. The Black Sea nettle is quite large. The bell of the jellyfish can measure up to 3 feet in size while...

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