Sneaky Sleeper Sharks

Recent studies conducted by Markus Horning of the Marine Mammal Institute at Oregon State University suggest that the slow moving sleeper shark may be preying on Stellar sea lions.  Until recently it was widely believed that the incredibly slow sleeper shark, it only swims at 2 mph at most, were mostly scavengers but now these views have changed.  Horning has been tracking juvenile Stellar seals for 17 years and during this time he has recorded several strange deaths that are reported by the tags on the seals.  These tags indicate that the seals were killed by a cold blooded predator in deep water.  These findings make many believe that it was the cold blooded and sea floor dwelling sleeper sharks.  These sharks can grow larger than great whites and fishing records show that a there may be many sharks lurking in the depths.  These findings are non conclusive and more research is on going and may soon shed more light on these strange instances.

http://www.sciencedaily.com/releases/2014/10/141015143301.htm
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A Real Atlantis

During the several ice ages that have occurred in recent history, sea levels dropped significantly and added 40% of land to the continents say researchers looking at these now re-submerged areas.  When these great expanses of land were exposed they were home to plants and animals, including ancient people.  researchers are discovery ancient artifacts under the sea that point to prehistoric cultures and settlements that would have been on the coast.  Some of these sites are tens of thousands of years old and tell a lot about ancient peoples and their lives near the ocean.  Tis research has been named "Continental Shelf Prehistoric Research,"and combines the fields of oceanography archeology and geoscience.  Researchers not only look at the artifacts of these ancient civilizations, but also at ocean patterns and rising and falling ocean levels that would have affected these people.  These scientists working in this new field want support from European governments to help them progress in their research and study these sites before they are destroyed by erosion an other factors.  Researchers have found, hatchets, canoe paddles, hut foundations, simple flint blades, and many other items in these ancient sites.

http://www.sciencedaily.com/releases/2014/10/141006084908.htm

The Magnetic Sense of Dolphins

In recent research, scientists have found evidence that dolphins have a sense called magnetoreception, meaning they can perceive magnet signals.  This would mean that they could use the Earth's magnetic field to navigate through the oceans more precisely This would be a useful skill in follwing the migration patterns that lead them thousands of miles through the ocean.  Other animals are considered to have this skill, including: "turtles, rodents, insects, bats and even deer" says Dorothee Kremers, who works as an animal behaviorist expert at the Rennes University in France.  Researchers discovered this by using two identical barrels dropped into water, one was magnetized while the other was not, and then recorded how the dolphins reacted.  The dolphins swam much ftser over to the magnetized barrel than the unmagnetized one, which has lead them to believe that they can sense its magnetic field.  It is still unclear how dolphins can detect the Earth's magnetic field, it is possibly due to ferromagnetic particles in the dolphin's cells.

http://www.scientificamerican.com/article/dolphins-may-use-magnetic-sense-as-gps/

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