no
It depends on the person, if you are a swimmer, you can probaly hold your breath for about 7-12 strokes, but if you dont excercise your lungs, them I wouldn't reccomend for that 15 seconds
1. Never swim alone. Always swim with a buddy or with a lifeguard present. 2. Don't practice breath-hold underwater swimming. Due to varying partial pressures of gases under deep water, it can cause shallow water blackout. You will not know when this happens, and you will go unconscious underwater. Having a lifeguard around is not a green light for breath hold swimming. They are a life guard, not a paramedic. Even if they were, there's no guarantee of revival if you pass out or drown. People have blacked out in pools before with a lifeguard present and still have died.
No running, no breath holding, no playing dead, no horse play, no diving(Shallow water) and no splashing.
So they can hold their breath longer. By hyperventilating they remove excess CO2 in their body, then when they take a deep breath, they are able to have more oxygen in their body, thus being able to hold their breath longer. It can be dangerous because breathing is regulated by the level of CO2 in our body, and when too much is removed, the body doesn't know when breathe again. http://www.deep-six.com/page73.htm
Yes, "shallow" is an adjective. It is used to describe something that has little depth, significance, or understanding. For example, a shallow lake, a shallow person, or a shallow conversation.
dolphins sleep in pods in a circle formation in shallow waters or a lagoon with no preditors
They live in shallow sea water
They usually stay near shallow water so if they are attacked they are less likely to be dragged under water for more than 15 minutes, thats how long they can hold there breath.
The water in the lake was very shallow
It can be shallow or deep.
Shallow water is more dense than Deep water. This means that a wave travelling from deep water to shallow water would bend towards the normal. Also, the wave would travel slower in the shallow than in the deep water
Seahorses tend to like Shallow Waters More than Deep Waters