But over time we got better at it, and we came up with this really sophisticated looking rig with four scuba tanks, five regulators and all the right gas mixtures, all that good stuff.

Everything is under water, under deep water.

So, I began, early on, competing against the other kids, seeing how long I could stay underwater while they went up and down to breathe, you know, five times, while I stayed under on one breath.

Under water?

Over time we got a little bit better at it, and we came up with this really sophisticated looking rig with four scuba tanks and five regulators and all the right gas mixtures and all that good stuff.

Because GPS doesn't work under water. That's why we need these tools.

It makes you convulse underwater not a good thing to happen underwater.

For going under the water!

I'm going under the water.

Under the brook

(d) Work underwater or underground

the freedom for underwater flight.

And because I'm an underwater photographer,

A submarine boat.

Burial ceremony... under the sea.

Did she go under?

Hearing underwater Hearing threshold and the ability to localize sound sources are reduced underwater, in which the speed of sound is faster than in air.

For breathing. These are to extend the line.

You know that icebergs are mostly underwater, their immense bulk hidden beneath the water.

And so his entire body really is underwater.

What's going on underwater?

Under the water and in the air.

Do you live down there?

Get that head underwater!

Who pushed him under water?

You can't talk underwater.

You ought to try underwater photography.

Do you like scuba diving?

You could have that kind of immersive experience of being underwater of feeling like you're underwater seeing what's going on.

The problem happens when you start to go underwater.

David Gallo shows underwater astonishments

Anthropogenic underwater noise pollution

That's fine, it's how we're designed.

But the patent for underwater flight

life underwater, the Buddha replied...

You mean a submerging boat?

We do our hunting and farming here.

It was under water a whole day.

Sam, all this is going to be under water.

So, I began, early on, competing against the other kids, seeing how long I could stay underwater while they went up and down to breathe, you know, five times, while I stayed under on one breath.

I set out to find a place in the world where I could observe dolphins underwater to try to crack the code of their communication system.

My main tool is an underwater video with a hydrophone, which is an underwater microphone, and this is so

And you can use that now to go for many kilometers horizontally underwater and to depths of 200 meters straight down underwater.

In work underwater or underground or in open cast mines

XII. Underwater cultural heritage