Danger in the Sea

Today, I will show three danger in going sea-bathing.

Rip Current
 Rip current is the most dangerous phenomenon. However, all most all of the Japanese don't know what is the rip current and how to deal with that. This may influence the high number of drowned people compared with other countries.  Then, I want to explain to you the meaning of rip current.
 Do you know the mechanism of water movement in the sea!? A large amount of the seawater cannot change. But, the wave occurs. When the wave occurs, seawater comes from the sea to the beach. When seawater comes to beach, the seawater tries to get back to the sea. This movement is a rip current.
 Rip current is so powerful and so fast. I heard that rip current's speed is of up to 8 feet per second, rip currents can move faster than Ian Thorpe. In short, the general public cannot swim along rip current. However, panicked swimmers often try to counter a rip current by swimming straight back to shore. Such swimmers often drown because of fatigue.
 What should we do if you are caught in a rip current??? Then, you should require the lifesavers assistants. We lifesavers are always ready for helping you, and we usually stave off a danger. Therefore, if you want to swim and play safety, I recommend you go to the sea with lifesavers. Following picture is a poster that show how to deal with rip current.

 Reference page(http://oceanservice.noaa.gov)


Inshore Holes
 Inshore holes are very dangerous to non-swimmers and small children because they can be swept into deep water quickly. Inshore holes are caused by wave action on the sandy bottom off out beaches. Inshore holes causes uneven bottom contours that result in a dangerous condition. Inshore holes can be very deep, and the person may not be able to touch bottom. Inshore holes are sometimes just long trenches along the beach, but at other times they are characterized by flattened wave action. Inshore holes often turn into channels that can also cause rip currents. Therefore, protector should pay attention to their children. And if you were caught in such a deep inshore holes, you should calm down and go back to the beach.


heatstroke
 You may think the swimming or play in the sea is a only danger. But, on the beach is also have danger. Then, I talk about heatstroke. Nowadays, schools often have opportunities to teach students about heatstroke, so you may know. Heatstroke is a result from exercise or heavy work in hot environments combined with inadequate fluid intake. Heatstroke may cause death. Therefore, if you have sickly feelings, you must drink waters and salty something and get enough rest under a cool condition such us under the tree.