Posts Tagged ‘marine life’

Marine Life in the Caribbean Sea

Tuesday, January 25th, 2011

The Caribbean Sea is a body of water that is a part of the North Atlantic Ocean. Mexico and Central America are its main land barriers, but is also adjacent to the Greater Antilles. The Caribbean is one of the largest salt water seas. The sea is located directly on top of the Caribbean plate, thus earthquakes and volcanic activity are very common, as are tropical storms and hurricanes.

Marine life in the Caribbean is delicate, to say the least. The coral reefs located there make up about nine percent of the world’s coral reefs. A coral reef is an underwater structure made from calcium carbonate, secreted by tiny living animals called corals. Coral reefs provide ecosystem services to tourism, shoreline protection and fisheries. The actual structure of the reefs prevent erosion of the shoreline. The growth of a coral reef creates a diverse ecosystem of itself that is highly sensitive to environmental changes. Hurricanes cause a lot of damage when the winds drop large amounts of mud or sand on them. Even strong waves churned up by high winds can break up the reefs.

Sea Turtles are a common inhabitant of the Caribbean Sea. The Green Sea Turtle is most prevalent in the Caribbean area and is of great importance to both the ocean and the beaches. In the ocean the turtles eat the sea grass that grows from the bottom of the ocean. To remain healthy, the grass must be kept short. Healthy beds of sea grass are also important as breeding areas for other marine life such as fish and crustaceans. Sea Turtles lay their eggs in holes on the beaches, often near vegetation. Their eggs, whether they are hatched or unhatched provide nutrients for the beach vegetation. Even baby Sea Turtles who do not make it to the ocean provide nutrients for the plants. Healthy vegetation on the beach prevents erosion.

Dolphins are very bountiful in the Caribbean. They are closely related to the whale and porpoises and are said to be the smartest marine mammal in existence. They are playful, social animals who will often seek out human interaction. Those characteristics alone threaten their lives, as there are many countries in the world that still slaughter Dolphins for profit. They contribute to the tourism industry through tours and swimming sessions. Any Barbados Resort can arrange a swim with Dolphins, and many people claim it is a once in a lifetime ‘must’.

The Swordfish is a highly migratory, predatory, but elusive fish. Many sports fishers arrange tours with Atlantis Paradise Island resort for the sole purpose of catch-and-release of a swordfish. They are very large, with males growing up to 300 pounds. They are, of course, named for their sharp beak resembling a sword, which with its streamlined physique allows it to swim through the water at a very high rate of speed. Although they are not listed as an endangered species, the United States Natural Resources Defense Council conducted a marketing campaign to promote the belief that the species was in danger. To date, the swordfish stock in the North Atlantic (including the Caribbean) is fully stocked.

The Barracuda is a fish renowned for its large size and fearsome appearance. They have a distinct under-bite and pointed head, making them easy to spot. They are voracious and opportunistic predators, prone to taking their prey by surprise. The barracuda is a solitary species, only really congregating with their own kind when they are young. Many natives of the Caribbean consume barracuda, and La Romana resort often serves barracuda steaks or fillets on their menu.

The Atlantic Blue Marlin is the largest species of marlin, reaching up to 20 feet and weighing 1800 pounds. They are a popular sporting fish, but are almost always released after unhooking. They are incredibly fast swimmers, reaching speeds of 110 kilometers per hour, hence the pleasing challenge to sports fishers. Greenpeace International declared in 2010 that the Striped Marlin, White Marlin, Atlantic Blue Marlin and Black Marlin as having a very high risk of being sourced from unsustainable fisheries.

These are but a few of the incredible creatures residing in the Caribbean Sea. The sea is a delicate balance of rare life that eco-tourism could help protect. The first step is in awareness, the next in conservation. Ask the staff at your resort or hotel how they are contributing to the protection of the Caribbean eco-system,.

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Jellyfish Facts

Tuesday, October 19th, 2010

Jellyfish is a delicacy in Japan and other countries across the globe. Because of this, major developments in its market industry have been advanced. Jellyfish facts are that it is prevented from going bad by drying it. While wet, it rots after very few hours. However, dried options can still be used for the delicacy after many weeks.

In relation to other species in the fish family, their feeding habit is very different. It normally stings a prey and after the prey is paralyzed, it uses its tentacles to bring the food into its mouth. Although there is no specific prey that can be associated to jellyfish, the most often used prey includes small fish and aquatic planktons although this depends on the size of the species in question. Humans are the worst enemies of this creature. The stinger serves the purpose of keeping off enemies as well as stinging them.

Jellyfish facts say that they lack brains, heart, bones and eyes. You should also know that it can process and interpret some stimuli irrespective of the lack of brains. This is mysterious as that is usually a preserve of brain’s work. Despite their lack of eyes, jellyfish can also sense light impulses through untrue eyesight. The nervous system that it has can only detect a prey or an enemy and this helps it to protect itself either by hiding or attacking.

Furthermore, its body is more than 95 per cent water. Not just that, it is considered as one of the oldest aquatic creature by having existed for more than 650 million years. Even sharks and dinosaurs have not managed this duration. Jellyfish facts are that they are marine creatures and are found in virtually all the oceans in the world. Only a special species of jelly fish lives in fresh water and is not scientifically categorized as a jelly fish. Amazingly, sea wasp also called box jellyfish kills more humans than it does to other aquatic creatures every year. The largest measured about eight feet in diameter. This is equivalent to two and half meters.

They can grow up to a length of 120 feet and the tentacles can grow to be almost equal in length to a half of a soccer pitch. More jellyfish facts include that they grow through many lifecycles giving them ability to reproduce both sexually and asexually at various cycles. They grow through phases like planula which is the larva stage. These get attached onto a surface where they grow into polyps and then later into medusa.

Do you like Jellyfish? Find out more about different jellyfish species at JellyfishFacts.Net and don’t miss our collection of jelly fish facts.

Undersea Photography Techniques

Tuesday, August 31st, 2010

Just about everything imaginable is already invented and available on the market. Now even cameras are able to go above their previous limitations. If before a digital camera could only capture photos of things which can be seen on land, by making use of technology, even fish are now able to share their moments by using a digital camera lens.

It truly is human nature to be unsatisfied with what we have. Often times, humans want something new, something fresh, something interesting, and something uncommon. That is why, underwater photography caught the interest of most people – either they want to discover how to capture an underwater photo themselves, or they’re just attracted by the photos shot underneath the ocean.

If you happen to belong to those who wish to take shots underwater, then these few tips might be of help.

Underwater photography is, as the term implies, capturing pictures under water. Basically, the rules of underwater photography are the same as in normal photography, however, taking shots in a very different environment may require some more effort than taking a photo in a waterless environment.

A very important thing you should keep in mind is the fact that along with the different environment you have to deal with, taking pictures underwater has so many limitations – limited daylight, limited equipment (as you cannot bring all your photography equipment underwater), limited time (of course, at some time, we have to surface for air, thus our focus and momentum are interrupted).

First suggestion, you have to know how to hold your digital camera the correct way. It is strongly recommended you aim to stay at the bottom of the seabed. When you find a very good position, you must position the digital camera in the palm of your left hand, then steady it by utilizing your other hand. It is very important maintain your upper arms close to yourself, so you won’t wiggle. Just be sure you hold the camera with both hands, never use only one for it may cause you to rattle, hence a blurry photo.

Now, it’s time to take your shot. Always bear in mind that in underwater photography, you have to take photos close up. If you are using a long shot technique, you are putting more water between your lens and your subject, so a huge possibility that your picture is blurry.

Nevertheless, while you are enjoying learning the fundamentals of underwater photography, it’s also advisable to understand a number of things. Coral reef is one interesting subject, however if you touch it, it’ll die. Some irresponsible photographers still take a shot without considering what they can damage. These creatures – they’ve got life – and you should be cautious about it. Keep in mind that a picture isn’t worth a life.

If you have to protect your environment from yourself, you might also need to guard yourself from the environment. As everyone knows, water can be a bit dangerous. So before you decide to dive into water, you need to first arm yourself with the skills and training for every aspect of underwater activities. No harm in preparing, right?

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Journey To The Sea

Tuesday, August 10th, 2010

There are millions of odd creatures under the ocean bed. We may not expect to see them as monsters with terrific shapes. They called so because of their enormous size. There is no light deep into the ocean, because light cannot penetrate into such depth. This depth also has acute shortage of oxygen for respiration. Some animals have the ability to create their own light to keep predators away and attract prey. Underwater animals and plants have specials organs to adapt to oxygen debt and light lacking environments. This is why underwater plants do not have the usual green color in their leaves. They fail to photosynthesize in absence of sunlight. This exciting world contains endless wonders that we have not yet seen.

Practices to bring these creatures on surfaces failed but this did not quench the people’s thirst. People from all over the world are making great efforts to capture the beauty of different species of the ocean. Underwater photography is best if one has learnt the art of photography well. In order to achieve better results with these, the use of the underwater digital camera is highly recommended. Underwater housing also can be bought for the digital camera used. These equipments are waterproof and designed specially with better photos capture capability. The difference between these cameras is that it is waterproof. It is therefore not a good idea to ignore the user manual provided with the camera and test it in a fully filled bath tub. One should know to use these cameras with safety.

We still dwell into a world with many unexplored places having unseen monsters. In these places scientists dare to find countless monstrous animals with unending facts. Whenever scientists find a rare variety of ocean animal, they make a full study of that and classify them accordingly. Then they place them into different classes and types. Within the next few years, other varieties of fishes and plants will be added to the world directory.

Nowadays many aquariums are set up to show people the beauty of nature. Today scientists use other modern means to detect creatures underneath. Some of these are echo- sounding devices, underwater robots, submersible video cameras etc. Scientists today have enormous analyzed data to share with us and materials to keep them busy for few more years.

Human beings are dependent on marine life. Thus, we should all be responsible for our marine life.

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The Lions Manes Jellyfish Deadly Stings

Thursday, July 22nd, 2010

If you go near a big water reservoir you will surely notice that there are a lot of jelly-like creatures along the coast and in the water. They are called jellyfishes and are the creatures that inhabit all the oceans. But behind their beauty and attractiveness lies a danger to the health of people. Of course you can’t expect all of the jellyfishes to be dangerous, but many of them have a poisonous sting which can cause harm. But most of them are safe. One of the biggest jellyfishes known to men is the Lion’s mane jellyfish that inhabits the Pacific, Arctic and Atlantic oceans. The greatest Lion’s mane jellyfish found had a 2.3m cap diameter and tentacles that were 36.5 long.

However despite their big size their sting isn’t fatal. There hasn’t been a reported case in which a person has died, because of a sting from a Lion’s mane jellyfish. But of course if you get stung by such a jellyfish you should consider visiting a doctor as quickly as possible, because you will be feeling some strong pain and the place where you got stung will change its color to red.

However don’t be confused by the astonishing sizes of the largest species of Lion’s mane jellyfish found. The fact that one specimen had such vast sizes doesn’t make the other specimens also so big. For instance the specimens which inhabit the north oceans are quite big and can reach such sizes, but the specimens that inhabit the other oceans most often reach up to 60cm diameter with tentacles up to 30m. The tentacles of the Lion’s mane jellyfish are its main weapon for hunting due to their ability to stick to the prey, disabling its movement. The length of the tentacles is the biggest joker of the Lion’s mane jellyfish when hunting, because it can easily reach the prey without notifying it of its presence.

At the moment the Lion’s mane jelly is considered the longest animal on Earth with the length of the largest specimen at 36.5m it is longer than the great Blue Whale which is currently known as the largest animal in the world. Their bodies are usually shaped like an eight-pointed star. From the center of their body comes out an array of colorful arms. The color of the Lion’s mane jellyfish depends on its age. While the bigger ones usually have a dark purple color the smaller ones usually have a dark yellow – light orange color. The Lion’s mane jellyfish mainly feeds on plankton, small fishes and moon jellies, but it also has a lot of enemies like sea turtles, larger fishes and other jellyfishes to which it is considered a prey.

Lion’s mane jellyfishes usually reside near the surface of the ocean and they don’t go under 20m in depth. They mainly move thanks to the currents in seas and oceans, but their bodies also pulsate slowly moving them forward. The time of the year when it is most likely to see a Lion’s mane jellyfish is at the end of the summer and the early autumn when their flocks are greater in size and the ocean currents carry them near the coast.

Do you think the lions mane jellyfish is cool? Learn more about the lion’s mane jellyfish at JellyfishFacts.Net and don’t miss the section on jellyfish stings.

categories: jellyfish,marine life,ocean,biology,aquariums,fish,outdoors

Many Types Of Wonderful Jellyfish

Thursday, July 22nd, 2010

The population of most seas and oceans consist mainly of jellyfish. Jellyfishes are truly remarkable creatures which possess amazing beauty and attractiveness. However a lot of those jellyfishes are threat to the health of people because they can sting and inject toxins inside your organism. But not all of the stings caused by jellyfishes possess a mortal threat and different jellyfishes inflict different pain with their stings. The stings can cause severe pain or even death due to the venom. Another term used for jellyfishes is a “medusa”, but it is used for the last cycles of their life-time.

Jellyfishes are maybe the most attractive sea creatures. They don’t only attract with their abstract forms, but also with the variety of colors in which they’re colored. The color effect on the jellyfish is caused from the fluorescent chemicals which they have flowing through their body. Those chemicals react and cause them to be seen in different hues and colorizations depending on the given situation they’re into. Some jellyfishes use their colorizing ability to attract their own species so that they can multiply or may also use that ability to frighten enemies. The proportions of the materials that make a jellyfish is pretty strange – they are made of 10% jelly substance and 90% water and that is the reason why they’re named jellyfish. It is pretty interesting, isn’t it?

One of the biggest jellyfishes that man has discovered is the Tiburonia granrojo. This type of jellyfish is colored in vivid red. This type of jellyfish differs a lot from the other species which have much clearer body types. The Tiburonia granrojo uses up to 7 arms or tentacles to capture its prey so that it can digest it. However the tentacles of that jellyfish are quite short if we compare them to other jellyfish species. Their main residence is the Pacific Ocean and they usually live from 600 to 1500m depth. However that type of jellyfish is very rare and is protected by the law because of the fact that only twenty three of that kind has been found.

The Purple striped jellyfish is another interesting specimen of the jellyfish class, although it can be seen only on the Californian coastline. As you can tell by the name it is colored in dark purple and has stripes on its body. However the Purple striped jellyfish doesn’t have those stripes all the time, in truth they get those stripes when they get old and in the beginning of their life journey they aren’t purple, but light pink.

And these are only two of the amazing species of jellyfish that can be seen in seas and oceans. However if you aren’t an adventure man you can always go to the city aquarium and witness the amazing beauty and glory of the jellyfish kind. Medusas are the most often seen creature in the oceans and this is because of the fact that they continue multiplying each day of their lifetime.

There are many wonderful kinds of jelly fish in the world. Point your browser to JellyfishFacts.Net and see more wonderful jellyfish by browsing our awesome selection of jellyfish pictures.

categories: jellyfish,marine life,ocean,biology,aquariums,fish,outdoors

The Interesting Man Or War – Blue Bottle Jellyfish

Tuesday, July 20th, 2010

Jellyfishes are truly remarkable creatures. Abstract looking, translucent, glowing they are really one of the most beautiful inhabitants of seas and oceans. And the fact that most of their body consists of water is really interesting. However there are some kinds of jellyfish that aren’t so attractive on the outside, but their anatomy is also remarkable. But the biggest attraction for people is the outside of the medusa and the colors and lights it has. And we won’t be exaggerating if we say that the Blue bottle jellyfish is one of the most beautiful and interesting species of the jellyfish class.

If you a see a jellyfish which is shaped like a bottle when on the beach and if it is blue then you are probably staring at a Blue bottle jellyfish. However this isn’t the only name of that jellyfish. The Blue bottle jellyfish term is used most in the areas of New Zealand and Australia and for the other part of Earth’s population the jellyfish is called the Portuguese Man o’ War because of the resemblance with a battleship which the Portuguese sailed on in the past. However the Blue bottle jellyfish doesn’t only have an astonishing outside look, it is one of not so many jellyfishes which are not monolith organisms, but they actually consist of a number of smaller organisms named zooids.

The Blue bottle jellyfish feeds with small fish, plankton and almost all of the small creatures which inhabit oceans and seas. Another interesting thing about the Blue bottle jellyfish is the way it captures its prey and then imprisons it. The Blue bottle jellyfish envelops its prey using tentacles which glue to the target and then injects toxins into the prey which paralyze it making in unable to fight back. However a small number of jellyfishes use their arms and tentacles to capture their prey like that. The reason why the Blue bottle jellyfish is able to do that is because its tentacles are dotted with small, but sharp barbed hooks which pierce the target and stick to it.

The sting of the Blue bottle jellyfish is in no cases fatal. There hasn’t been a reported case in which someone has died because he was stung by a Blue bottle jellyfish. But you should be careful if stung by a Blue bottle jellyfish. You should as soon as possible seek medical intervention or if there isn’t a doctor you should carefully wash the place without touching it and then use ice packs to cool it and reduce the pain.

The way the Blue bottle jellyfish moves is also very interesting. Instead like most of the jellyfishes which move with their tentacles the Portuguese Man o’ War lives mainly on the surface of the ocean meaning that its top is on the surface and the tentacles are underwater. But if it is in danger of an attack it can quickly deflate its “cap” and submerge. It doesn’t move on its own instead it uses tides, wind and sea currents. Blue bottle fishes inhabit mainly the ocean around Australia and New Zealand, but they can also be seen else in the world.

Do you want to learn more about jellyfish? Be sure to check out JellyfishFacts.Net for more information on Jellyfish. Don’t miss the jellyfish sting portion of the website.

Irukandji Jellyfish, The Most Deadly Jellyfish, Tiny And Fatal

Monday, June 28th, 2010

The Irukandji Jellyfish is a small but venomous and dangerous Jellyfish. With its size only one cubic centimeter and found exclusively in the marine waters off the coast of Australia, just north of Cairns, in Queensland. There are two types of Irukandji Jellyfish, Carukia Barnesi and Malo Kingi. Collectively they are responsible for Irukandji syndrome, first documented in 1952 by Hugo Flecker and named after the native Irukandkji people of the region. Carukia Barnesi, the first species of Irukandji Jellyfish was discovered in 1964 by Dr. Jack Barnes, who, wanting to prove this tiny Jellyfish was responsible for the Irukandji syndrome, stung himself, a lifeguard and his son.

The Irukandji Jellyfish has four tentacles that can range from a few centimeters in length to around 35 centimeters. The stingers are grouped in clumps and look like rings made up of small red dots around the bell of the jellyfish, and also along the tentacles. Since the Irukandji Jellyfish is too tiny and fragile to handle and contain, very little research has been done. However, it is known that its venom is a hundred times more potent than that of a cobra, and a thousand times as much as that of a tarantula. What ever research has been done, has confirmed that the potency of its venom allows it to stun its prey (like fast and small fish) very fast.

The Irukandji is cover in millions of microscopic singers, responsible for the venom release. To understand how these stingers work, you can imagine a long inside out sock, coiled along the lines of a spring. Someone unlucky enough to come in contact with the Jellyfish by touch will cause an uncoiling of the spring latching the stingers into the skin like barbs. When the victim pulls away the stingers are ripped from the Jellyfish’s body and remain embedded in the victim. The Irukandji has the unique ability to ‘fire’ the stingers from it’s tips and inject the venom, a unique phenomenon.

Burning on the area of contact, drop in blood pressure and heart rate, sweating, severe and intensely pain muscle cramps in the arms, legs, back and kidneys are some of the Symptoms of Irukandji Syndrome, a very painful and unpleasant experience. Ocean explorers beware, the Irukandji Jellyfish!

An individual recently stung by the Irukandji will notice symptoms within 4 – 30 hours which may take up to 2 weeks to completely be resolved. Pain management is the only treatment for the Irukandji sting as there is no known anti-venom. Patients have been known to experience pain so intensely that they beg the doctor for death. The best way to avoid the sting is to avoid the Jellyfish. Be mindful of the conditions, seasons and areas you are swimming or diving. Divers beware, the Irukandji Jellyfish!

Want to learn more about the Irukandji Jellyfish, including how to deal with a Jellyfish Sting? Check out JellyfishFacts.Net for all you need to know about Jellyfish.

In Spite Of The Lion’s Mane This Jellyfish Does Not Roar

Sunday, June 27th, 2010

The Lion’s Mane jellyfish has the distinction of being the largest jellyfish known to man. The largest specimen on record had a bell shaped body with a diameter of 7 feet 6 inches and its tentacles were 120 feet long. It was definitely longer than a blue whale and is considered to be the longest animal known to the world.

The Lion’s mane jellyfish prefers the cold waters of the North Atlantic, Arctic and North Pacific oceans but similar jellyfish to the Lion’s Mange can be found just outside the waters of New Zealand and Australia. It is curious in that they are rarely found south of 42 degrees north latitude.

Although huge Lion’s Mane jellyfish, with bells as large as 8 feet, can be found in the colder waters, generally the size of Lion’s Mane jellyfish varies. Some of the Lion’s Mane found in Southern waters are a fair amount smaller. Lion’s mane jellyfish tentacles can be 90 feet or even longer. Grouped in clusters of 8, with more then 100 tentacles per cluster, the Lion’s mane sticky tentacles around arrange in a series of rows. Despite it’s large size, the Lion’s Mane jellyfish is not too dangerous, it’s sting isn’t fatal and only causes temporary pain and redness.

The bell shaped body of the Lion’s Mane jellyfish has eight divisions, or lobes, that make it look like an eight pointed star. A complicated arrangement of its colorful arms radiate from the bell’s center which are shorter than the thinner tentacles which come out of the bell’s subumbrella. Size has a lot to do with the colors of the Lion’s Mane jellyfish – smaller specimens tend to be a light orange or tan, while the larger specimens range from a bright crimson to a darker purple.

The Lion’s Mane jellyfish is a coldwater species and can’t really handle warmer water. The jellyfish have a life span of one year and prefer to settle in sheltered bays that are shallow, as they approach the end of their life span. They live on zoo plankton, moon jellies, small fish and ctenophores. Out in open waters, the Lion’s Mane provides shelter and food for species like Medusa fish, Harvest fish, Butter fish, juvenile Prow fish and Shrimps, who treat it like a floating oasis. The predators of the Lion’s Mane jellyfish include other species of jellyfish, sea turtles, larger fish and sea birds.

Learn more about Jellyfish today! There is alot of information about many interesting jellyfish species at JellyfishFacts.Net including a large collection of Jellyfish Pictures.