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Latest Cnidaria Stories

Fossil of Haootia quadriformis
2014-08-28 03:00:26

Sarah Collins, University of Cambridge A new fossil discovery identifies the earliest evidence for animals with muscles. An unusual new fossil discovery of one of the earliest animals on earth may also provide the oldest evidence of muscle tissue – the bundles of cells that make movement in animals possible. The fossil, dating from 560 million years ago, was discovered in Newfoundland, Canada. On the basis of its four-fold symmetry, morphological characteristics, and what appear to...

hard coral species Pachyseris inattesa
2014-08-19 03:30:07

Pensoft Publishers The hard corals primarily responsible for the construction of coral reefs around the world have attracted the attention of taxonomists for hundreds of years. Despite the important role such corals play in building what are arguably the world's most diverse ecosystems, coral reefs in some parts of the world still hold surprises for modern scientists. An international team of scientists has recently described a new hard coral species, Pachyseris inattesa, from the Saudi...

New Order Of Marine Creatures Discovered Among Sea Anemones
2014-05-08 03:00:21

American Museum of Natural History A deep-water creature once thought to be one of the world's largest sea anemones, with tentacles reaching more than 6.5 feet long, actually belongs to a new order of animals. The finding is part of a new DNA-based study led by the American Museum of Natural History that presents the first tree of life for sea anemones, a group that includes more than 1,200 species. The report, which is published today in the journal PLOS ONE, reshapes scientists'...

2014-04-30 10:33:54

Sponges are usually considered to be the oldest living animals, having evolved before all other groups. The simplicity of their body structure and tissue organization has for many years made them candidates for the ancestral group of animals, and they have long been regarded as our best illustration of what the earliest animals would have looked like. This has been supported by genetic analyses, which suggest that sponges branched from other animals a very long time ago, deep in the...

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...

84799f4a4090c36868519cb7a50091201
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...


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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Word of the Day
out-herod
  • In the phrase to out-herod Herod, to be more violent than Herod (as represented in the old mystery plays); hence, to exceed in any excess of evil.
Herod refers to 'Herod the Great,' a Roman client king and 'a madman who murdered his own family and a great many rabbis.' According to the OED, the term is 'chiefly with allusion to Shakespeare's use' in Hamlet.
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