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How well do you know scuba diving?

Guess the real numbers behind diving and the deep, see how everyone else guessed, and get the source.

Guess the statOne tap · see how everyone guessed

Underwater, pressure increases by one atmosphere for roughly every how many feet of depth?

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scuba diving
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Today's round

  • 4 stats to guess
  • 1 opinion poll
  • 0 played today

Guess, see the crowd, get the real number. One ranked attempt per day.

Dive by the numbers

Real figures with their sources. All Dive facts →

30,000,000+

About how many people has PADI certified as scuba divers to date?

PADI calls itself the leader in global dive training; it was founded by divers in 1966.

Source: PADI, About PADI padi.com

6,600

About how many PADI dive centers and resorts are there worldwide?

PADI also counts 128,000 professional members worldwide.

Source: PADI, About PADI padi.com

nearly 15 hours

Ahmed Gabr reached his record 332 m depth in about 12 minutes. How long did it take him to return to the surface?

The slow ascent was needed to manage the risks of the extreme water pressure at such depths.

Source: Guinness World Records (2014) (2014) guinnessworldrecords.com

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One Dive stat a week

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Questions

How does DiveSurvey.com work?

Each question asks you to guess a real number about scuba diving. After you answer you see how everyone else guessed, then the real figure and where it comes from.

How is the daily round scored?

Four stats and one opinion poll. A correct guess earns 100 points plus up to 50 for speed, with a combo bonus for answers in a row. The range next to the right answer earns 40. Opinion polls earn 25 for having your say, and nailing every stat adds 150.

Where do the numbers come from?

Every stat links to its source, such as government statistics agencies, research organizations and industry groups. Figures are checked against the source before they go live.

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