There is concern about the survival of corals in the Great Barrier Reef, particularly from bleaching due to global warming. But corals in colder, higher latitudes are doing very well indeed. They are adapting by changing internal chemicals. 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Showing posts with label deep. Show all posts
Showing posts with label deep. Show all posts
Beached Beaked Whale in Australia
Many animals have not been seen for a long time. Indeed, it is not known whether they have become extinct. Some, of course, live in places not usually visited by humans. Recently a beaked whale was washed up on a beach Australia. It is rare and lives deep in the sea.
The actual species cannot be verified by manual examination of the body, Part of the body will be sent to the Australian Science Museum in Sydney for DNA tests and X-ray scans to determine the correct species.
Not much is known about beaked whales because they live so far down in the sea. Only stranded and beached specimens have been found. They do come to the surface to breath but do not linger there for very long.
Many scientists have never seen a live beaked whale. A beaching of this kind is very rare indeed. Parts of the body will be thoroughly examined to shed more light on how the mammal lives. We will never know everything about fellow animals. The more we know the better.
Science by Ty Buchanan
New Mushroom-Like Organisms found off Australian Coast
There may be alien creature "out there" - Well many believe that there is - but some weird things live on this planet. In the ocean depths of Australia odd living organisms have recently been discovered.
At first glance they look like floating mushrooms. They are not related to fungi though. The creatures are actually flowering plants and vertebrates. Dendrogramma mostly consist of a stomach surrounded by jelly-like skin.
Scientists believe they are the remnants of early life forms which appeared before the life that went on to dominate the Earth. In other words they were a dead end. They are unique, not related in any way to life that eventually became successful across the globe.
There are a lot of new things still continuing their existence at the bottom of the oceans. Many are very specialized living off toxic substances that would kill other organisms. Don't bother to look for life in the stars. Much still awaits discovery beneath our feet.
Science by Ty Buchanan
Man Caught Deep Ocean Fish 42,000 Years Ago
Our ancestors not only fished rivers and the coastline. They caught marine food in the deep ocean. It is known that people travelled across oceans 50,000 years ago. However, proof that they could catch fish in the deep sea went back only 12,000 years.
New evidence shows that Man ate fish from the ocean further back than 12,000 years. In caves on the island of East Timor remains of tuna and other large fish have been found.
East Timor was "out of bounds" for paleontologists until recently because of the ongoing troubles with Indonesia. Information on ancient Man is changing scientific knowledge about our ancestors. Bone fish hooks dating back 42,000 years have been found there.
The diet of early Timorese was varied. It included birds, rodents, bats, snakes turtles and fish. Few large animals lived there. Half of the fish found were tuna, a fast moving fish that would have taken great skill to catch. Using nets was the only way, so they had an advanced culture.
New evidence shows that Man ate fish from the ocean further back than 12,000 years. In caves on the island of East Timor remains of tuna and other large fish have been found.
East Timor was "out of bounds" for paleontologists until recently because of the ongoing troubles with Indonesia. Information on ancient Man is changing scientific knowledge about our ancestors. Bone fish hooks dating back 42,000 years have been found there.
The diet of early Timorese was varied. It included birds, rodents, bats, snakes turtles and fish. Few large animals lived there. Half of the fish found were tuna, a fast moving fish that would have taken great skill to catch. Using nets was the only way, so they had an advanced culture.
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Paleontology
Mary River Turtle in Danger From Global Warming
Australia has a rare turtle restricted to the Mary River in Queensland. The University of Queensland has concluded that global warming will seriously endanger this species. Eggs were collected and incubated at 26, 29 and 32 degree Centigrade. Young turtles from eggs incubated at the highest temperature stayed in shallow water because they had difficulty swimming.
Life expectancy would be short for these young. Food is in deeper water and there is safety from predators. The Mary River turtle, Elesor macrurus, is classed as endangered. Numbers have been falling for several decades. Other dangers to their survival are eggs being collected to the pet trade and introduced predators such as dogs and foxes.
It is suspected that other species of turtle are similarly affected. Circumstances for the Mary River turtle are particularly dire because nests are in shallow water which can be directly affected by a warming atmosphere.
Life expectancy would be short for these young. Food is in deeper water and there is safety from predators. The Mary River turtle, Elesor macrurus, is classed as endangered. Numbers have been falling for several decades. Other dangers to their survival are eggs being collected to the pet trade and introduced predators such as dogs and foxes.
It is suspected that other species of turtle are similarly affected. Circumstances for the Mary River turtle are particularly dire because nests are in shallow water which can be directly affected by a warming atmosphere.
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Science
Survey Vehicle Reaches Mercury
A NASA space vehicle, New Messenger, has reached Mercury and is beaming back information to CSIRO's Canberra Deep Space Communication Complex. It has taken nearly seven years to get to the hot inner planet. A Mercury day is six Earth months long while its year is only 88 days.
There is no possibility of humans landing on this little planet as the temperature reaches 430 degrees. Its minimum is extreme as well, minus 180 degrees. The sun would look three times bigger than on Earth if you could stand on it surface and look at it that is.
An earlier exploratory vehicle, Marina 10, only gave a cursory look at the innermost planet. The whole planet is to be mapped this time. It will show whether there is ice at the poles. The sun never shines into pole craters. A mystery to be solved is why Mercury is composed mainly of metals.
There is no possibility of humans landing on this little planet as the temperature reaches 430 degrees. Its minimum is extreme as well, minus 180 degrees. The sun would look three times bigger than on Earth if you could stand on it surface and look at it that is.
An earlier exploratory vehicle, Marina 10, only gave a cursory look at the innermost planet. The whole planet is to be mapped this time. It will show whether there is ice at the poles. The sun never shines into pole craters. A mystery to be solved is why Mercury is composed mainly of metals.
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Science
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