Tuesday, 16 April 2013

Hello!

Hello my blog readers! Welcome to my post about dolhpins!
Dolphins are very intelligent and they seem to be well loved by humans. This aquatic mammal has been able to fascinate us in a variety of ways. They are curious, form strong bonds within their pod, and they have been known to help humans in a variety of circumstances including rescues and with fishing.
There are 36 different species of dolphins that have been recognized. 32 of them are marine dolphins which are those that we are the most aware of and 4 of them are river dolphins. It can be very interesting to look at each of these species uniquely versus dolphins as a whole.
They are very entertaining due to the leaps that they make out of the water. Some of them leap up to 30 feet in the air as they do so. They have to come to the surface to for water at different intervals to get air. This can be from 20 seconds to 30 minutes between when they get air. The body of the dolphin is grayish blue and the skin is very sensitive to human touch and to other elements that could be in the water.
Even though dolphins have 100 teeth, they don’t use them for eating. They do use them to get the fish though and then they swallow them. They can consume up to 30 pounds fish per day. They usually work as a team in their pod to get the school of fish surrounded and balled up. From there, they can plow through the middle and eat plenty as they do so.
They take turns doing this so that all that participated get to dine on the fish. This is just one of the many different types of feeding strategies that they may take part in. They do what is necessary to get the food for the pod members. It can include jumps, zig zag patterns, circles, and a combination of efforts to get the job done.

Most of the species of dolphins live in saltwater but there are some that are able to do well in the freshwater locations. They are mainly found in the freshwater of the Amazon River. They are easily seen by humans as they tend to stick to the swallow locations of the water.

It is amazing the difference in size of the various species of dolphins. The larger ones can weigh about 11 tons and be close to 30 feet long. The smaller ones are about 90 pounds and 4 feet long. Between those two spectrums you will find all weights and lengths. The species as well as their location play a huge role in their overall size.
The body of a dolphin is designed to help them move through the water quickly and without exerting huge amounts of energy. They rely on their pectoral fins and the fluke (tail) to help them navigate through the water.

Great easy to read facts from this site, check it out, there are some more amazing things on it. http://www.dolphins-world.com/
bottlenose dolphin in blue ocean

You know how little kids, girls especially, always want things to be pink?
Well, what if i told you there was a pink dolphin? It's called the amazon river dolphin.
You cant really see their pink colour here, but google image them if you like, they are really spectacular. But, if you've been following my blog, you'll realise that I'm probably going to say something negative about now.
These dolphins fall into the category of threatened, but like so many things, they are data deficient, so the numbers may be much lower than assumed and may been endangered.
And of course, the big one. every year roughly 1,500 of these dolphins are killed for human uses.
 
Amazon river dolphins are the largest of four species known to exist in South America and Asia.

Their genetic siblings have already died off elsewhere: The Yangzte river dolphin in China was declared functionally extinct in 2006, the victim of pollution, overfishing and increased boat traffic.

This is intersting, the International Union of Conservation of Nature lists the Ganges river dolphin in India as endangered, and the Irrawaddy river dolphin in Bangladesh as vulnerable.

But if you are familiar with the topic you'll know about the dolphin slaughter in Taiji, Japan.
This little bit of info from http://www.opsociety.org/issues/dolphin-slaughter-in-taiji
 
 Each year from September to May over 20,000 dolphins are slaughtered in Japan. Fishermen round them up by the hundreds using sound barriers to disorient and herd the frantic pods out of their normal migrations into hidden lagoons like the one featured in The Cove. Bottlenose dolphins, especially ones that look like Flipper, are pre-selected by trainers and sold off for upwards of $200,000 to marine mammal parks around the world, where they will remain in captivity performing as circus acts. After the trainers and spectators have left, the rest of the dolphins are inhumanely killed in what can only be described as a massacre.
Taiji is a little town 415km from Tokyo, but it hides a big secret, and unless you know what is going on, it is hard to comprehend what is happening.

The sea is red with blood, blood of dolphins.
I do not know much of this story nor the stories origins, but I feel that this is wrong.


Dolphins like anything in our oceans, are also at a huge risk of being caught in nets and on long lines.
Dolphin_in_net
This dolphin is a Maui Dolphin that is found in New Zealand, although not in any regularity, they are now extremely threatened, with only around 55 left, and only about 20 of those breeding females, it is expected they will be extinct by 2030.


This next photo has nothing to do with dolphins but I think it needs to be shown anyway.
As usual, if theres anything you want me to post about, feedback, questions etc. feel free to ask and ill try to get back to you as soon as possible.

Have a good evening!
Thanks lots,
Nadine :D




 

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