Friday, August 22, 2008

A Flying-Fish Record Recorded

A Japanese TV crew has filmed what is believed to be the longest flight of a flying fish ever recorded.

The NHK television network said one of its camera crews captured the 45-second flight from a ferry near Kuchino-erabu Island in southwestern Japan.

The crew was reportedly on its way to shoot footage for a nature documentary.

The fish can be seen occasionally beating its tail against the surface of the water to keep itself aloft.

The ferry was traveling at speed of about 20 mph (30 kilometers per hour) during the encounter, NHK said.

More than 50 species of flying fish, in the marine family known as Exocoetidae, are found in warmer ocean waters worldwide. They can rise out of the water to avoid predators underneath, and stretch out their long pectoral fins to glide through the air.

Usually the fish remain airborne for just a few seconds before landing back in the water - but as Monday’s video demonstrated, they can give themselves another boost with their tail fins.

The previous record for a fish’s compound flight was 42 seconds, reported from Florida by a sea captain with a stopwatch in 1928. A 45-second flight may well be close to the physical limit for a flying fish, since the creature must suspend brachial respiration in the air, NHK reported.

Thursday, August 21, 2008

Amazing Ship Find

A 22-gun British warship that sank during the American Revolution and has long been regarded as one of the “Holy Grail” shipwrecks in the Great Lakes has been discovered at the bottom of Lake Ontario, astonishingly well-preserved in the cold, deep water.

Shipwreck enthusiasts Jim Kennard and Dan Scoville used side-scanning sonar and an unmanned submersible to locate the HMS Ontario, which was lost with barely a trace and as many as 130 people aboard during a gale in 1780.

The 80-foot sloop of war is the oldest shipwreck and the only fully intact British warship ever found in the Great Lakes.

“To have a Revolutionary War vessel that’s practically intact is unbelievable. It’s an archaeological miracle,” said Canadian author Arthur Britton Smith, who chronicled the history of the HMS Ontario in a 1997 book, “The Legend of the Lake.”

The finders of the wreck said they regard it as a war grave and have no plans to raise it or remove any of its artifacts. They said the ship is still considered the property of the British Admiralty. Although the vessel sits in an area where the water is up to 500 feet deep and cannot be reached by anyone but the most experienced divers, Kennard and Scoville declined to give its exact location, saying only that it was found off the southern shore.

The sloop was discovered resting partially on its side, with two masts extending more than 70 feet above the lake bottom. “Usually when ships go down in big storms, they get beat up quite a bit. They don’t sink nice and square. This went down in a huge storm, and it still managed to stay intact,” Scoville said. “There are even two windows that aren’t broken. Just going down, the pressure difference, can break the windows. It’s a beautiful ship.”

Smith, who was shown underwater video of the find, said: “If it wasn’t for the zebra mussels, she looks like she only sunk last week.” The dark, cold freshwater acts as a perfect preservative, Smith said.

At that depth, there is no light and no oxygen to hasten decomposition, and little marine life to feed on the wood. The Ontario went down on Oct. 31, 1780, with a garrison of 60 British soldiers, a crew of about 40, mostly Canadians, and possibly about 30 American war prisoners.

The warship had been launched only five months earlier and was used to ferry troops and supplies along upstate New York’s frontier. Although it was the biggest British ship on the Great Lakes at the time, it never saw battle, Smith said.

Friday, August 8, 2008

Speaking From Inside The Egg

Biologists have known that shortly before hatching, crocodiles make noises within their eggs.

A new study, which involved playbacks of the pre-hatching calls, reveals these calls from the egg tell siblings it’s time to hatch and tell moms it’s time to uncover the nest.

Researchers Amélie Vergne and Nicolas Mathevon of the Jean Monnet University in France monitored Nile crocodile eggs that were due to hatch within 10 days.

The eggs were placed into one of three groups, for which the researchers either played recordings of pre-hatching calls, recordings of noise (other than the calls), or no sound.

The group of eggs that got a dose of real crocodile calls responded and moved, as the about finger-sized babies jostled about, more often than the “noise” eggs.

The eggs incubated in silence showed no movement.

All four of the individuals that successfully hatched in the crocodile-call group did so during or within 10 minutes of the playbacks.

Thursday, August 7, 2008

The Methuselah Tree

Scientists have grown a tree from what may be the oldest seed ever germinated.

The new sapling was sprouted from a 2,000-year-old date palm excavated in Masada, the site of a cliff-side fortress in Israel where ancient Jews are said to have killed themselves to avoid capture by Roman invaders.

Dubbed the “Methuselah Tree” after the oldest person in the Bible, the new plant has been growing steadily, and after 26 months, the tree was nearly four-feet tall.

The species of tree, called the Judean date, is now extinct in Israel, but researchers are hoping that by reviving the plant they may be able to study its medicinal uses.

“The medicinal plants from this region are very important because they are historically mentioned in the Bible and the Koran,” said Sarah Sallon, director of the Louis L. Borick Natural Medicine Research Center at the Hadassah Medical Organization in Jerusalem, which initiated the experiment to grow the tree as part of its Middle East Medicinal Plant Project. “The Judean date was very valuable and very famous, not just as a source of food but as a source of medicine,” Sallon said. “When I heard there were ancient seeds found in the archeological dig, I thought it would be interesting to see if we could try to grow them.”

Carbon dating of the seeds found at Masada revealed that they date from roughly the time of the ancient fortress’ siege, in A.D. 73.

The seeds were found in storage rooms, and appear to have been stockpiled for the Jews hiding out against the invading Romans.