Depends on what you have to travel with.
With a nuclear submarine, you can pretty much keep going until you run out of food. 1-2 Times around the world shouldn't be a problem.
density is high
They can travel as far as they want to, provided they have food and water available.
Can't be answered without knowing the caliber, bullet weight and if it is fresh or salt water.
Only a few feet. Water slows and stops bullets rather effectively.
Well I travel to the water pitcher in my house, so its about 60-80ft
Sound does travel under water otherwise the Humpback would be wasting its time singing!
Jellyfish do not live that far under the water's surface. These jellyfish typically only live a few feet under the water.
me
by swimming
Yes they can!
There are more things for the light waves to bounce off of in water, so light can not travel in a straight line or as far.
A submarine is a vessel that can travel both on the surface and under the water.