
http://videos.howstuffworks.com/discovery/36716-world-of-sharks-scuba-muffler-video.htm
- Summary
Returning states, Jake who has worked as a scuba diver for 10 years, hears about a new invention about scuba muffler. Scuba muffler acts as a filter in a diving device. It transforms large bubbles to small one. Because most scuba diver try to hold their breat while filming , they kept looking a invetion to avoid some danger they have underneath sea. The greatest obstacle is noisy sounds of regulator. While breating, the scuba device maks floating air and the regulator have the air flow resist. However, the regulator is too heavy to hold and it makes them become exhausted too quickly. The scuba muffler is desined to overcome this problem by placing it behind scuba diver's head. It is desined to use differnt pleasure that allows air pull out easily. So, many scuba divers have welcome this new invetion.
- Personal opinion
Scuba diving is one of beatuiful journey that can experience of mysterious sea. Thanks to many developed devices , we have investigated underneath sea.There are a lot of problems we have faced , and as the devices have developed day by day , many problems have overcome. This video is about scuba muffler which we need to breath . It explains the advantages of using this muffler instead of former one. As using the devices, it is getting open to ordinary people to have a more opportunity to go scuba diving.I have dreamt to go scuba diving as well . Someday I wish I would use this scuba muffler recalling this video.
- Vocab
Muffler(n) : a device on a car that makes it quiter
risitance(n) : a refusal to accept someting








