
There are three types: closed circuit, Open Circuit, and Mixture rebreathers. All have their pros and cons. This article will discuss the most popular rebreather types and what you should look out for when selecting a rebreather. The last section will show you which rebreathers do not disturb marine life. Whichever rebreather you choose, be sure it is compatible for the environment that you'll find yourself in.
Semi-closed circuit rebreathers
If you're comparing semi and closed circuit rebreathers, it might be tempting to go with a closed circuit model. However, these two types of rebreathers are largely similar in principle, and the primary differences are in the way gas is delivered and mixed. You will need to consider your specific goals and needs before deciding whether you want a closed-circuit or semi-closed-circuit model.

Continuous-flow "mixture rebreathers"
The majority of continuous-flow rebreathers can be used for long dives. However, the latest versions let you breathe with the same amount of oxygen as the ambient air. This allows the user to breath more easily while also protecting them from bacterial contamination. Rebreathers have become more reliable and durable than ever. As long as the rebreathers are used properly, they won't be able to inhale water.
Purging oxygen rebreathers
To ensure constant gas flow, a diver who rebreather uses oxygen. The rebreather attaches to a cylinder which holds the gas source. Pure oxygen or liquid oxygen increases the work required to breathe. Rebreather divers must be able to inhale both pure oxygen and liquid oxygen. There are two types: active and passive addition rebreathers. Both types of rebreathers are similar. The only difference is the amount of gas used. As hypoxia prevention is most effective, divers should be familiar with both.
Rebreathers don't disturb marine life
Rebreathers have one major advantage: they don't interfere with marine life. Rebreathers, unlike open-circuit diving, which can be noisy and produce gushy gas and have noisy valves, are quiet and offer a better underwater experience. The best thing about rebreathers is their comfort.
Rebreathers cost
Rebreathers can be an important medical tool for anyone in the military, law enforcement or other high-risk environments. Increasing awareness about the safety benefits and cost savings of rebreathers has driven the development of the industry. The high cost of these devices might discourage many from using them. Below are some ways to reduce the cost for rebreathers. Continue reading to find more.

Safety concerns for divers using Rebreathers
Although safety concerns surrounding rebreathers may be rare, they are still a concern. Research has shown that rebreather diving may be 10 times more dangerous than open-circuit Scuba. Rebreather divers are actually safer than base jumping or skydiving in terms of deaths. To minimize risk, rebreather users need to be committed and persistent in following the safety protocols.