Colourful sea creatures

Sab, may 11, 2013

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Colourful sea creatures

White Anemone and Sea Star   The creatures that inhabit the world’s oceans run the full spectrum of colors—often in intricate patterns, advanced camouflage, and varying degrees of transparency. Here, a white sea anemone keeps company with a sea star in the waters off British Columbia. There are more than a thousand sea anemone species. The invertebrate takes its name from the equally flashy terrestrial anemone flower.       Blue Tang   Adult blue tangs swim close to the ocean floor near Mexico. A species of surgeonfish, the blue tang is abundant in the waters of the Caribbean, often schooling around coral reefs. As they mature, the tangs’ color progresses from bright yellow to a deep bluish-gray or purple.   Clownfish and Anemone A clownfish is at home between[...] 

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Colossal sea creatures

Mar, mar 12, 2013

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Colossal sea creatures

Whale Shark Photograph by Brian J. Skerry The largest fish in the sea, the whale shark can reach lengths of 40 feet (12 meters) or more. The gentle giants are filter feeders, swimming with their wide mouths open to collect plankton and small fish. Giant-Spined Sea Stars Photograph by Chuck Davis, Riser/Getty Images Rows of large spines cover giant-spined sea stars off the coast of California. Sea stars (also known as starfish) can regenerate limbs, and in some cases, entire bodies. Giant Spider Crab Photograph by Emory Kristof A giant spider crab is illuminated by the lights of a submersible. Protected from some predators by its hard exoskeleton, the creature—which can grow to ten feet (three meters) wide—can also blend in with the ocean floor. Under deeper cover, it can disappear beneath[...] 

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Web recomendada: Ciencia

Mar, mar 5, 2013

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Web recomendada: Ciencia

Desde los archivos de Einstein hasta los mapas de Google, pasando por desastres naturales, redes de investigación, fotos del sistema solar y muchos sitios más que encierran la temática de la Ciencia.  Más de 25 sitios reseñados en esta temática para explorar la ciencia en forma divertida, visitar el museo del desierto, conocer cómo funcionan las cosas, y hasta tener acceso a portales científicos traducidos. Buscar en el website: http://www.deltaasesores.com/enlaces/ciencia?utm_source=ERD647&utm_medium=Domeus

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Babosa de mar con pene desechable

Jue, feb 21, 2013

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Babosa de mar con pene desechable

2013-02-18 – 09:15:16 Una babosa de mar llamada Chromodoris reticulata, del tamaño de un pulgar humano, ha sorprendido a los científicos por la capacidad que tiene de despojarse de su pene tras el apareamiento para hacerlo crecer nuevamente más adelante. La extraña criatura, que vive en el Océano Pacífico, es la primera que se conoce que puede copular en repetidas ocasiones con lo que se ha descrito como un “pene desechable”, según publican científicos japoneses de la Universidad de Tokio y la Universidad de la ciudad de Osaka en Biology Letters. Los nudibranquios como esta babosa son animales hermafroditas, que poseen órganos reproductivos tanto masculinos como femeninos. Cuando se aparean, pueden ejercer el papel del macho y donar esperma al mismo tiempo que lo[...] 

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VIDEO: Dakuwaqa’s Garden – Underwater footage from Fiji & Tonga

Jue, feb 21, 2013

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VIDEO: Dakuwaqa’s Garden – Underwater footage from Fiji & Tonga

Underwater footage shot whilst scuba diving in the Fiji islands and Tonga. Featuring colorful coral reefs, huge schools of tropical fish, sharks, humpback whales, underwater caves, scuba divers and much more marine life from the south Pacific.

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