You have the statment wrong, the correct one is :-
" keep one's head above water".
The swimming analogy means that whatever you are doing in your life/business, you are managing to keep afloat (by implication financially) - Hence a business that goes bankrupt is said to have 'gone under'.
It means pay attention. Yes it can mean that it can also mean ...... Stay Strong keep Going dont worry Dont be soo gloom ..... Depends
Keep hot water on it or ice to keep it from blustering
They are just managing to keep above water.
The literal meaning of "keep your hand on the plow" is to continue working diligently and not give up. The figurative meaning is to persist in one's efforts, stay focused on goals, and not be distracted by obstacles or challenges.
The keep the water out of your eyes meaning you can see underwater
A few gallons of water is always handy to keep in your car. A portable GPS, hand sanitizer, adjustable wrench, a hammer, first aid kit and a pen and a notepad are also very handy things to keep on hand.
It means to employ someone for a job who is quite unsuitable for the task at hand.
To keep your hand and arm above your heart, you can elevate them by resting them on a pillow or using a foam wedge while sitting or lying down. Additionally, you can perform gentle exercises or stretches that encourage upward movement, such as arm raises. If you're standing, simply raising your arms and holding them at shoulder level can also help maintain elevation above the heart.
If you hold your hand above a lighted candle, you may feel the heat rising from the flame. The radiant heat can warm your skin and cause discomfort if held too close for an extended period. However, as long as you keep a safe distance, your hand should not be harmed.
A red mark above the nose could indicate sensitive skin. Try to use cooler water and keep the area hydrated.
you should keep it in the water even if you remove it out of the plane and above suface
Stilt house are usually built over water with a tidal rise and fall. The stilts keep the house above water.