Company lists · Data refreshed November 2026

Top 25 Deep diving instruction companies worldwide

RevenueBase identified 3,228 company matches for deep diving instruction companies worldwide as of November 2026 and tracks 20,380 professional contacts across them, including 1,830 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for deep diving instruction companies worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for deep diving instruction companies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
3,228Companies
20,380Contacts tracked
1,830Verified emails
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The 25 largest deep diving instruction companies worldwide

Ranked by team size
Top 25 of 3,228 company matches for deep diving instruction companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchRancho Santa Margarita, CA, United StatesHQ recorded Nov 6, 2026n/a4,372 contacts →

Exact match

“PADI® (Professional Association of Diving Instructors®) is the world’s largest ocean exploration and diver organization, operating in 186 countries and territories, with a global…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchWendelstein, FL, GermanyHQ recorded Nov 6, 2026201-500724 contacts →

Exact match

“Scuba Schools International (SSI) was established in 1970 with the vision of making it possible for anyone to learn how to dive safely.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchStuart, FL, United StatesHQ recorded Nov 6, 202651-200205 contacts →

Exact match

“We are a global training certification company that relies heavily on electronic education and media platforms to bring vital Differentiated Instruction and Credentialed…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchRiverview, FL, United StatesHQ recorded Nov 6, 2026n/a175 contacts →

Exact match

“The National Association of Underwater Instructors (NAUI Worldwide) is a premier recreational dive certification and membership organization headquartered in Riverview, Florida…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchLivorno, ItalyHQ recorded Nov 6, 202651-200162 contacts →

Exact match

“Drass has been continuously active since 1927 and currently is the largest diving manufacturing business, running most of the ongoing projects.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchDurham, NC, United StatesHQ recorded Nov 6, 202651-200162 contacts →

Exact match

“The world’s most recognized and respected dive safety organization, Divers Alert Network (DAN), has remained committed to the health and well-being of divers for 45 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchDubai, United Arab EmiratesHQ recorded Nov 6, 2026201-500156 contacts →

Exact match

“PETRODIVE is an independent underwater contracting company serving maritime and international oil & gas clients, offering marine, subsea and maintenance services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchRoseto Degli Abruzzi, ItalyHQ recorded Nov 6, 2026n/a155 contacts →

Exact match

“DAN Europe (Divers Alert Network Europe) is an international non-profit medical and research organisation founded in 1983, dedicated to the health and safety of the global dive…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchOmaha, AR, United StatesHQ recorded Nov 6, 2026201-500133 contacts →

Exact match

“Diventures was founded in 2009, with one location in Omaha, Nebraska, and has expanded to eighteen locations across twelve states.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchMiami, United StatesHQ recorded Nov 6, 202651-200105 contacts →

Exact match

“DEEP is an international ocean engineering and technology company on a mission to make humans aquatic.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchOsborne Park, AustraliaHQ recorded Nov 6, 202651-20098 contacts →

Exact match

“SHELF is a totally independent commercial diving, engineering, project management and marine support & logistics company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchMarseille, FranceHQ recorded Nov 6, 202611-5097 contacts →

Exact match

“FFESSM - Fédération Française d'Etudes et de Sports Sous-Marins.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchUnited StatesHQ recorded Nov 6, 2026n/a91 contacts →

Exact match

“Scuba Dive Certification Body”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSalt Lake City, UT, United StatesHQ recorded Nov 6, 2026201-50090 contacts →

Exact match

“At Huish Outdoors, we've brought together the Best Brands in Dive to create the leading scuba and immersion technology company in the world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchDania Beach, FL, United StatesHQ recorded Nov 6, 202651-20084 contacts →

Exact match

“How many local dive shops can say they have been in business for over 35 years?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchRichmond, BC, CanadaHQ recorded Nov 6, 202651-20081 contacts →

Exact match

“In the 20 years since inception Shearwater has captured a dominant market position among scuba diving computers with a distribution network of more than 600 dealers in 90…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchUnited StatesHQ recorded Nov 6, 2026201-50081 contacts →

Exact match

“Scuba Diving International is a Scuba training and certification agency.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchEl Cajon, United StatesHQ recorded Nov 6, 20261,001-5,00077 contacts →

Exact match

“SCUBAPRO is the iconic mark of the world’s most accomplished scuba divers, the preferred and recommended choice of elite diving professionals around the globe.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchMarseille, FranceHQ recorded Nov 6, 202651-20068 contacts →

Exact match

“Discover the Dune Universe.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchLake City, FL, United StatesHQ recorded Nov 6, 2026n/a67 contacts →

Exact match

“IANTD Is The World's Largest Scuba & Rebreather Diving Training Organization Of Open Water, Nitrox, Enriched Air (EANx), Overhead Environment, Cave, Wreck, Recreational…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchSingaporeHQ recorded Nov 6, 202651-20065 contacts →

Exact match

“Molchanovs is the leading global provider of high-performance freediving gear and education, driven by a passion for innovation and sustainability.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchGenoa, ItalyHQ recorded Nov 6, 202611-5063 contacts →

Exact match

“Drafinsub operates in the marine field since 1977, undertaking any kind of underwater activity, in shallow or deep water, offshore and onshore.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchAraruama, BrazilHQ recorded Nov 6, 202611-5059 contacts →

Exact match

“A RCS Subaquática é uma empresa de mergulho e soluções subaquáticas, criada por engenheiros, técnicos e mergulhadores preocupados com a segurança nas operações de mergulho e com a…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchHigh Springs, FL, United StatesHQ recorded Nov 6, 202611-5056 contacts →

Exact match

“Global Underwater Explorers (GUE) is a nonprofit organization dedicated to advancing excellence in diving through high-quality education, global collaboration, and exploration.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchRapid City, SD, United StatesHQ recorded Nov 6, 202611-5049 contacts →

Exact match

“Midco Diving is a contracting & marine services company performing professional dive services worldwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 3,228 deep diving instruction companies worldwide

See the full list, filter by size, metro and specialty, and access 1,830 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Deep diving instruction companies worldwide at a glance

As of Nov 6, 2026
9.0%Verified-email coverage
6.3Average contacts per company
1-10Median size (employees)
0.6%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
2,208
11-50
733
51-200
149
201-500
19
501-1,000
10
1,001-5,000
3
5,001-10,000
3
10001+
1

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for deep diving instruction companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “deep diving instruction companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 1,830 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Deep diving instruction companies by location

14 lists · largest first

Every Deep diving instruction companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “deep diving instruction companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many deep diving instruction companies are there worldwide?

RevenueBase identified 3,228 company matches for deep diving instruction companies worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

PADI tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most deep diving instruction companies?

The United States leads with 717 companies, followed by the United Kingdom (179) and Spain (173). Every deep diving instruction companies list by country and city is linked on this page.

Which city has the most deep diving instruction companies?

London leads with 19 company records, followed by Dubai (18) and Singapore (18).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,830 professional contacts with verified work emails tracked across these 3,228 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.