Sea life depending on water and light

18 02 2010

The co-relation between water and light and how the last affects the first causes a variation in the kind of sea life which a diver might be able to enjoy while practicing the sport. Water and light affect each other as well as affect the way in which humans can interact with the sea depending on them.

This co-relation between water and light affects divers not only by causing variations in their vision but also by allowing them to see completely different kinds of sea life. The sea life which a diver might be able to see at day time is completely different than the one he could enjoy during night. Besides this, sea life also varies depending on the water depth in which a diver is and the amount of light that such depth receives.

There are three main sea regions in which different amounts of light reach and in which different kinds of fauna and flora can be found. These three sea regions are: the sunlight zone, the twilight zone, and the midnight zone. Each one of the three main zones have its own characteristics and is a whole different sea world that the others. Besides these zones, the coast line is also often seen as another sea region due to the way it can also show a specific sea activity.

The sunlight zone is the water region that is closer to the surface and therefore it is the one which receives the highest amount of light. The co-relation of water and light of this zone allows more than 90% of sea species to live in it. Besides, the sunlight zone is the only one in which plants can live due to the amount of light they receive in it.

The second sea region is the twilight zone. In this zone we can find sea animals such as shrimps and squids. And the third sea region, called the midnight zone, is the deep dark sea area where light doesn`t reach. In this zone only about 1% of sea species live, and animals such as sharks have their habitats in it. The temperature in the midnight zone is almost freezing and water pressure is very high.

Source: Dive Pilot

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How to be successful at snorkling

14 08 2009

 

If you are willing to practice snorkling for the first time, there are some basic tips which you should learn in order to succeed at it. You can learn some of these tips through the next paragraphs as well as we recommend you to ask for the advice of an expert before practicing the sport.

The first thing you should do before snorkling is relax. You should not enter into the water nervous or stressed since this would make you loose power and control over your body and your movements. You need to be able to feel good and comfortable in the water in order to be in control of yourself and your body.

Before snorkling you should also practice wearing the equipment while floating in the water. This will allow you to become familiar with it and its weight. You can also practice by floating in a horizontal position, whether it is facing down or up. You should also remember that objects look closer in the water, and it is important that you learn how to recognize the real distance between you and an object while being in the water.

You should also be aware that a wave can bring water into your snorkel or mask and you would need to keep your calm while this happens and you fix it; if you loose control it would only make you loose more oxygen than you should. Therefore, it is also recommendable that you practice how to keep your breath and go up to the surface to clear your snorkel from the water which might enter.

It is also important to learn how to correctly use your fins which might be not as easy as it seems. You should also practice walking with them on the floor or on the boat in order to become familiarized with them. You should also try them into the water in order to learn how to control your movements while wearing them. It is highly recommendable that you practice wearing all your snorkeling equipment while being into the water before you actually practice snorkling.

 

Source: Diver Pillot