They have to drill holes in the ice, dive down into the water cold, cold water to get hold of the instrument, bring it up, do any repairs and maintenance that they need to do, put it back and get out before the ice melts.

if you can complete a one kilometer open water race.

Salt water came streaming into open subways.

Nothing beats a dip in the cool waters of Rio de Janeiro's world famous beaches on a hot Sunday morning.

And we saw about 35 alternations between open water and ice covered water, between gravels and these plant sediments.

It consumes its food in the open water or in the deep, where it can be recognized by its large mouth.

A polynya is an area of open water surrounded by sea ice.

and we'll ship them 500 miles up the coast to Port Elizabeth in these open air trucks, and release them into the clean waters there and let them swim back home?

Planktonic forms in open water usually rely on turbulent mixing of the upper layers by the wind to keep them suspended in sunlit surface waters.

Most live pelagically in open water, although some live as surface films at the water sediment interface (benthic), or even under damp atmospheric conditions.

And when I was researching pearl divers, I found the world of free diving.

Stop wallowing in your foul memories.

They have to drill holes in the ice, dive down into the water cold, cold water to get hold of the instrument, bring it up, do any repairs and maintenance that they need to do, put it back and get out before the ice melts.

Riparian species are capable of swimming on the surface of the water, and readily leap into the water when alarmed Some species in the tribe Scelimenini are fully aquatic and capable of swimming underwater.

The watershed includes about 4 open water and an area with a population of 2.5 million people (2000).

Polar bears are known to be able to swim as far as 65 kilometres across open waters of a polynya.

Ahead full, Diving stations!

During that year,

So when I began to dive, in 2005,

I'll show you some real fancy diving!

I can get a diving bell.

Do you like scuba diving?

And what I found, here's the wrinkle

So we built a portable keyboard that we could push through the water, and we labeled four objects they like to play with, the scarf, rope, sargassum, and also had a bow ride, which is a fun activity for a dolphin.

In technical diving, the diver may carry different equipment for different phases of the dive some breathing gas mixes may only be used at depth, such as trimix and others, such as pure oxygen, which only may be used during decompression stops in shallow water.

But, it struck me how much this dive, these deep dives, was like a space mission.

So, I started researching into pearl divers.

Only you have to be careful to dive where the deep pool is.

We are now ready to make the dive at position number one.

I realized scuba gear extends your range of activity in just the same way as a wheelchair does, but the associations attached to scuba gear are ones of excitement and adventure, completely different to people's responses to the wheelchair.

What do you know about deepsea diving?

You're lucky. You have a champion skin diver here.

You are supporting open standards, and an open media environment.

Ottoman galleys contested the Portuguese intrusion in the Indian Ocean in the 16th century, but failed against the high sided, massive Portuguese carracks in open waters.

The consequences are harrowing drought and famine, loss of livelihood, the spread of water borne diseases, forced migrations, and even open conflict.

Open information is fantastic, open networks are essential.

Trimix is a breathing gas, consisting of oxygen, helium and nitrogen, and is often used in deep commercial diving and during the deep phase of dives carried out using technical diving techniques.

Since the incident the United Kingdom had changed its diving procedures.

Well, in the context of diving, you get too much, you die also.

Narwhals, these majestic narwhals with their eight foot long ivory tusks, don't have to be here they could be out on the open water.

Scuba diving attracts many visitors to the island.

So for two and a half hours, you sink down to the bottom.

Has everyone seen the movie The Diving Bell and the Butterfly?

Drop all ballasts. Diving controls, full out position.

Ready to dive. Aye, sir. Diving stations!