How the scuba diving communities compare
A few giants dominate — r/scuba, r/diving and r/freediving together account for 70% of the combined membership. The oldest is r/scuba, founded in 2008, and every community here is more than five years old — this is a long-established corner of Reddit.
The 6 biggest scuba diving subreddits
- Sr/scuba ↗ 168,434 members · since 2008
Welcome to /r/scuba where scubbits dive deep! Ask questions and trade tips with a diverse community of divers, from open water newbies to dive instructors, commercial divers and scientists from around the world. Share your storie…
- Dr/diving ↗ 79,391 members · since 2009
Welcome to r/diving - Your underwater adventure hub! Discover the ocean's treasures. Whether you're a seasoned diver or just dipping your toes into the world of underwater exploration, this subreddit is your one-stop destination …
- Fr/freediving ↗ 50,339 members · since 2010
r/freediving. Where we work the art and science of not breathing.
- Sr/Spearfishing ↗ 48,943 members · since 2009
Spearfishing, on reddit. Freedive, scuba, salt and freshwater - if you're spearing, we're interested.
- Sr/scubadiving ↗ 43,871 members · since 2012
All about scubadiving
- Ur/underwaterphotography ↗ 34,681 members · since 2012
Welcome to r/underwaterphotography: A community to share underwater photos; get critiques, tips & advice; post gear reviews and generally chat about taking pictures in water. Posting Guidelines: If Posting photos please include, …
Choosing where to post
A simple rule of thumb: ask questions in the specialised communities and share your best finds in the big ones, where they can reach the most people. Always read the rules in the sidebar first — each community is run by its own volunteer moderators. Our guide to searching Reddit explains how to dig through any of these communities, and the subreddit info tool gives you the stats of one we don't list.
Frequently asked questions
Which scuba diving subreddit has the most members?
r/scuba is the largest, with 168,434 members, followed by r/diving (79.4K) and r/freediving (50.3K).
How many scuba diving communities are on this list?
We list 6 active, safe-for-work scuba diving communities with at least 25,000 members each, 425.7K members in total (people can be in several). Reddit has many smaller ones too; our guide on searching Reddit shows how to find them.
What is the oldest scuba diving subreddit?
r/scuba, created on Mar 16, 2008.
Are these scuba diving subreddits safe for work?
Yes. Every community on this page is public and not marked 18+ by Reddit, and we filter out communities whose name or description points to adult content.
Data: Reddit's public subreddit search and the Arctic Shift archive (Nov 6, 2026), growth from SubMouse's weekly snapshots. Member counts of communities outside our Top 1000 come from the archive and can lag a little. Not affiliated with Reddit.