Archive for February, 2012

I was reading this article, and I found it very interesting. This article talked about how intelligent octopi were, scientists say that they are the most intelligent invertebrate. Like the video we watched on cuttlefish, scientist’s put food in jars and let the octopus figure out how to get the food. They gave one of the octopus a jar with food and a twist off lid. It took the octopus 15 minutes to unscrew the lid the first try and, as they kept doing the experiment the average time was 2 minutes. They gave another Giant female Pacific octopus a pill bottle with food in it, and somehow it took the octopus 55 minutes to get the food the first try. I think this proves how insanely smart these animals are.

I found this very interesting. It is very hard to imagine how smart how cephalopods are. I mean when I was a little kid I could not open a push and twist bottle, these things can do it in just minutes without ever seeing anything like it before. I think octopus are very cool animals after reading this article.

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From: http://cdn.cbsi.com.au/story_media/339332313/panorama.jpg

The Caitlin Seaview Survey plans on documenting the Great Barrier Reef and other world wide reef locations in great detail. It travels through the water at 4 kilometers per hour and takes a 360 panoramic image every four to six seconds, then geotaxis and puts the images together for better viewing on google earth and google maps. The launch of this Seaview starts in September 2012.
How do you think this will affect our knowledge of learning about the ocean?
How deep do you think this can go?

http://www.cnet.com.au/explore-the-ocean-with-google-and-underwater-surveys-339332313.htm

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According to this article, scientists are trying to understand the ancient nervous systems by studying the patterns on mollusk shells. They think the patterns on the shells are some kind of ancient records which might give clues on how they evolve. In a similar way, it is like trying to record brain wave patterns. Through complex equations and simulations,  researchers use 19 different species of the sea snail Conus to create a model of the pigmentation patterns of mollusk shells.

They use a computer to imitate the patterns on the shells of different species, creating different models. “Since the parameters are telling the researchers something about the circuitry of the mollusks’ nervous system, this is an indirect way to study the evolution of a simple nervous system.“ This is fascinating because I always thought patterns on shells was something natural. I did not know patterns on external shells could have any relation to their nervous system. Evolution sure does bring about unnatural characteristics.

What do you think about the relationship between an animal’s nervous system and their patterns?

How are mollusk shells similar to octopus and cuttlefish?

 

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I read this article; http://www.thecephalopodpage.org/octokeep.php about how to successfully maintain keeping an octopus in your aquarium at home. Sound sketchy? Octopus are said to be maybe the most intelligent being able to change color, size, speed, and shoot out ink. Octopuses are able to adapt to new situations, and get through small spaces. Here is a quote from the article: “With chromatophores, iridocytes, and a well-developed nervous system, octopuses can quickly camouflage themselves to distract or scare a predator. Another amazing characteristic is that octopuses change their color seemingly to reflect their mood: usually strong red indicates ‘anger’ and white denotes ‘fear.’ There are exceptions to this.”

They seem pretty sketchy to me, however, they pose little threat to man. Max Gene Nohl, a diving expert, summed it up by saying “In my opinion the chance of a diver being attacked by an octopus is as remote as the possibility of a hunter in the woods being attacked by a rabbit.” Octopuses may be hard to capture, because they’re very intelligent and are known for making great escapes. Also, they need to be alone in the tank because they’ll eat all of the other little critters you put inside, or at least try to. If you somehow successfully capture an octopus, put a lot of hiding places in the tank as well and “weld shut” the lid. I know if I was put in a tank, they’d better weld that lid shut.

Here is another quote:”Octopuses are very responsive to their environment. If you have had an octopus for a few weeks, something is seriously wrong if it is hiding all the time, especially at night, and still not eating. Prolonged whitish coloration, especially if the octopus is not eating, is not a good sign.” Octopuses are nocturnal, so if you don’t see it at night there’s probably something wrong. You should probably feed the Octopus at night, if you go to sleep early. If you wake early you should feed it in the morning. One last note, if others keep their octopus in a tank with no lid, I WOULD DEFINITELY NOT advise YOU to do this AT HOME.

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http://www.thecephalopodpage.org/_images/Sepapama.JPG (picture)

I am mostly interested in this article, describing what cuttlefish are. I find it very cool that the flamboyant cuttlefish can change colors, and how the lines move on the cuttlefish body. Most people say that they are the most advanced vertebrate found. Even though they are closely related to slugs, they have much better motor skills, sensory structures and highly developed heads.

Another example of their advanced body is their eyes. They are very similar to many other vertebrates which could help study eye evolution and functions. Cuttlefish have layers of color producing cells that work together to get different patterns. Which look awesome on flamboyant cuttlefish. The top three color pigments seen are black/brown, red/orange, and orange/yellow. I think that these fish should be protected because they are very cute and colorful. Do you think that the cuttlefish could be considered a violent endangered species?

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I read the article about the mysteries of the nautilus. one of the interesting things about them is that nobody knows where their eggs are laid in the world. Also, nobody has been able to raise one from egg to maturity. We don’t know their lifespan and how long it takes them to mature. Even their population count is a mystery to us. Nautilus reproduce for many years which nobody knows how long either. However, we do know that they only lay about 12 eggs each year. Nautilus eggs are among the biggest compared to other animals the same size as a nautilus.

I learned a lot of about the mysteries of a nautilus. I didn’t know there were so many things we haven’t discovered from nautiluses. Somebody should start a research team that is dedicated to finding the answer to all of these mysteries. They should capture nautiluses and put a tracking device on them. Perhaps this will help us find where they lay their eggs based on where they go or how long they stay on one place. Who knows what other mysteries they hold? More research on them will help.

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Beware of the red octopus for when it bites you, be prepared for the start of a month long torment of pain and suffering. Red octopuses aren’t as big for they are about the size of a person’s hand and are unmistakably dangerous. Don’t under underestimate this little squishy sea creature, for its bite is as harmful as the octopus itself.

When this octopus bites its victim, it leaves a wound as small as 5mm; it’s practically hard to see it with the naked eye. This wound would start to bleed, then swell and give off an excruciating feeling of pain within minutes. This pain would usually last for about 20 minutes. It doesn’t just end there, for after a week signs of headaches and weakness will start to take effect. If this bite is untreated, necrosis will take effect for about a month.

It was said that hot water was an effective first aid treatment for bites and punctures of octopuses and other marine creatures. Hot water neutralizes the effects of the bite. There weren’t many discoveries of cures for these bites, so they’ve used this method as a number one priority ever since.

I find it shocking and amazed that such a small sea creature can put upon such a negative effect upon a person for such a long time. What other methods can be used to neutralize the harmful affects of octopus bites?

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This is an interesting article. This article is about a crustacean that was found 7km (7000 meters) off the coast of New Zealand. They call this new creature the super giant is a type of amphipod which are found around 2-3cm long. But this creature were found in the Kermadec Trench were ten times bigger than the usual length the largest was measured in 34cm. Alan Jamieson describes it as “It’s a bit like finding a foot-long cockroach.” They were found by using a large metal trap that had a camera equipped to it surrounded by sapphire glass to keep it safe from the pressure as they descended into the deep trench. The biggest they were able to get was 28cm to study.

Why do you think they grew in size?

Do you think there are more creatures out there to be found in these trenches?

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This article was pretty surprising to me; I’d never thought such fragile sea creatures could grow to be of an immense population.

Upon the past numbers of years from now, 2012, the increase in the jellyfish population have increased and is causing problems among several areas around the world. They have choked intake lines of power lines, caused dangers for tourists, and clogged nets for fishermen. As for instance in Japan, giant jellyfish have been clogging fishing nets of fishermen’s boats.

It’s been reported that there had been an increase in the jellyfish population at some areas but there are other areas in which the jellyfish population have decreased. This is bad because it will affect the food chain, fishing and ocean environments. The action that the people are taking upon this problem is by continually monitoring them and it will continue to go on in the future.

How the increase in the population of jellyfish came to be was said to be of numerous causes. These causes include over-harvesting fish, tourism, and the impact on human activities. It was still undecided whether the population of jellyfish had increased naturally, or if it was from human actions, or both.

What do you think?

How can we help to prevent the population of jellyfish from increasing in high numbers?

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I was looking at this article and I thought it was cool how coral are able to float to the top of the sand to escape from being crushed.  I had always thought that was never able to move when is started to grow. But not for this Sponge coral the movie shows that this sponge coral is able to inflate itself to escape from being buried alive. They were able to catch this on film using time-lapse photography.  Corals need to breathe but due to the sandy bottom they eventually get covered in sand. So to get this all on film he covered this mushroom sponge and took this time-lapse camera and set it up to take a picture every 10 seconds for 20 hours.

What do you think of this shocking discovery?

Do you think that if we did not have this time-lapse technology do you think we ever would of found out about this discovery?

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