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X-Ray Mag #30

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Great white shark attacks are planned

The researchers observed 340 attacks by great whites on fur seals within 2km of Seal Island, in False Bay, South Africa.

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Octopus and squid can hear you

The question of whether cephalopods can perceive sound has been controversial since the early 20th Century.

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X-Ray Mag #29

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All cephalopods are venomous

A broad study of cephalopods - more commonly known as octopuses, cuttlefish and squid - has show that they all possessed toxic proteins that performed functions such as paralysing the nervous system of prey.

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Crustaceans feel and remember pain

The research, which is just published in the journal Animal Behaviour was carried out by Professor Bob Elwood and Mirjam Appel

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Ancient sharks had colour vision

Until now, ancestors of modern sharks from 374 million years ago were the oldest known creatures to have both rods to see in dim light and cones, for bright light.

Recently, the genome of the elephant shark, Callorhinchus milii, a chimaerid holocephalan, has been sequenced and therefore becomes the first cartilaginous fish to be analyzed in this way. The chimaeras have been largely neglected and very little is known about the visual systems of these fishes.

By searching the elephant shark genome, Hunt's team have identified gene fragments encoding a rod visual pigment and three cone visual pigments. It also has two copies of the long-wavelength cone pigment gene, a duplication which may have given them trichromatic vision like primates.

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X-Ray Mag #28

Plus...

News and discoveries, wrecks, travel news, equipment and training news, books and media, underwater photo winners, turtle tales, whale tales, jellyfish tales, business directory and much more...

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Wreck of HMS Victory may be found

Brass cannons

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Want to dive a WW2 German aircraft carrier?

A research ship belonging to Polish oil company Petrobaltic found the 250-metre wreck 55 km north of the Polish port Wladyslawowo at a depth of more than 80m.

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Australia adds leatherback turtle to national endangered species list

"With warmer temperatures and changing climatic conditions increasing the pressure on water availability, ecological communities such as this must be protected," Mr Garrett said.

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Sponges regenerate the reefs

Dutch researcher Jasper de Goeij investigated how caves in the coral reef in Curacao and Indonesia ensure the reef’s continued existence.

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1890 Turkish shipwreck off yields artifacts

In 1889, Sultan Abdulhamid II dispatched the Imperial frigate Ertuğrul to Japan under his admiral Osman Pasha.

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Ana the Green Turtle swims from Indonesia to Australia

“Ana’s journey has revealed an ‘oceanic superhighway’ that helps us better understand how marine turtles navigate around the world’s oceans as well as highlighting the strong ecological and evolutionary connections between Indonesia and Australia’

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Whale's teeth a show-off to impress the girls

"They are the only cetacean species with tusks, and scientists have long wondered why, since their diet primarily is squid."

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Do whales like jazz?

Interspecies was started in 1978, to grant artists the same access to wilderness and wild animals that is usually reserved for field biologists. Their goal and belief is that science is not the only approach to understanding nature.

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