Help with some of the terms

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EFB

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Help this newbie understand...
what is a "wall"? a "water column"?

There should be a dictionary and acronym list in the back of my PADI workbook.

Thanks
 
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Just thought of something else- what is the difference between a regulator and an octopus?
 
Try having a look here: Scuba Diving Jargon Buster | Scuba Diving Glossary | C-Divers | Central Scotland Dive Club

Also, A "wall" is basically an underwater cliff and "water column" generally refers to a vertical section of water

EDIT: A regulator commonly refers to your primary demand valve I.E. the bit you breathe from that you hold in your mouth, an octopus is basically a secondary demand valve attached to the same 1st stage.
 
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Help this newbiw understand...
what is a "wall"? a "water column"?

Just thought of something else- what is the difference between a regulator and an octopus?

A wall is basically like an underwater cliff. Unlike the surface, where you start at the base of a cliff and go up, on a wall, you start from the top and go down over the edge of it to whatever your planned depth is. Walls are typically the delineation where the shallower shoreline drops into the deeper part of the ocean. The top of them may start as shallow as 20-30' and in some instanced drop off for thousands of feet.

The water column is basically all the water from the surface to the bottom. When people talk about their position in the water column it's usually related as depth from the surface. ex. on a 60' dive, someone in the middle of the water column is at 30'.

An octopus is a regulator, but that designation is typically given to your back up regulator for recreational divers, rather than the primary one you're breathing off of. Many of us use the term backup regulator vs. octopus.
 
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A wall is basically like an underwater cliff. Unlike the surface, where you start at the base of a cliff and go up, on a wall, you start from the top and go down over the edge of it to whatever your planned depth is. Walls are typically the delineation where the shallower shoreline drops into the deeper part of the ocean. The top of them may start as shallow as 20-30' and in some instanced drop off for thousands of feet.

The water column is basically all the water from the surface to the bottom. When people talk about their position in the water column it's usually related as depth from the surface. ex. on a 60' dive, someone in the middle of the water column is at 30'.

An octopus is a regulator, but that designation is typically given to your back up regulator for recreational divers, rather than the primary one you're breathing off of. Many of us use the term backup regulator vs. octopus.

Thanks for the reply...a wall sounds scary..
 
Great link..thanks
 
Walls are fun! It's especially fun to swim along the plateau at the top of one, and then swim off the edge -- you feel as though you are flying.

I think you have probably heard folks talk about doing skills "in the water column", which is referring to doing them while floating, rather than while kneeling or sitting (or, Heaven forbid, standing) on the bottom.
 
The term octopus originally and to some still means the entire regulator set. The term was coined as regulators sprouted hoses at the end of the double hose era. The primary 1st stage, Pressure gauge, BC inflater, alternate second stage and drysuit soon formed a ganglia much like the arms of an octopus.

In modern usage it has become a common term (including by manufacturers) for your alternate second stage, sometimes refered to as a safe second.

It looks like walls and water coumn are under control.

Pete
 
Walls are fun! It's especially fun to swim along the plateau at the top of one, and then swim off the edge -- you feel as though you are flying.

I think you have probably heard folks talk about doing skills "in the water column", which is referring to doing them while floating, rather than while kneeling or sitting (or, Heaven forbid, standing) on the bottom.

You mean like this? :)
Blanch725103.jpg
 
That's the most nonchalant diver ive ever seen, just casually standing there leaning against a phone box :D
 

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