Padi Channels

  • PADI.COM
  • Travel
  • Blog
  • Shop
  • Courses
  • Conservation
  • Club

Padi Language Selector

    • English
      • Chinese (Simplified)
      • Chinese (Traditional)
      • Dutch
      • French
      • German
      • Italian
      • Japanese
      • Korean
      • Portuguese (Brazil)
      • Spanish
      • Thai
      • Arabic
      • Russian

Padi Sign In

  • Sign In
    • PADI Pros’ Site
    • PADI eLearning
    • Certification Paks

Padi Location Links

  • Replace Your Card
  • Find a Dive Shop
  • Help
Home
Home
Home

Main navigation

  • Home
  • Diving
  • Travel
  • Conservation
  • Community
  • Scuba Jobs
  • Marine Life
search
Cancel

What Is a Thermocline?

Read Article
Megan Denny
10 January, 2026

Lake Diving

A mermaid doll atop a pile of debris removed from a lake in Switzerland

Marine Conservation Activities for Divers in Germany and Switzerland

Conservation activities in Germany and Switzerland for scuba divers, ocean lovers and people who want to help with local clean-up events.
Japanese Giant Salamander in Mountain River of Gifu, Japan

Freshwater Diving in Japan: Lakes, Rivers and Waterfalls

Explore freshwater diving in Japan’s lakes, rivers and waterfalls with crystal clarity, rare wildlife and unique underwater adventures.
Greenland Cold-Water Freediving

Take the Cold Plunge: Tips for Getting Into Cold Water Diving

If you only dive warm waters, you're missing out on incredible cold water dive sites. Take a scuba cold plunge!
Divers in a lake in Austria

The Best Outdoor Activities in Austria

Go hiking, diving, skiing, kayaking, rock climbing, and experience other adventures in nature with these best outdoor activities in Austria.
Aerial shot of a quarry in Belgium where you can scuba dive

Top 5 Quarries and Lakes for Scuba Diving in Belgium 

Belgium may be a small country, but its diving opportunities are anything but modest. It offers several lakes and quarries turned dive sites.
Divers in a lake in Austria

Carinthia, Austria – Diving in Magical Underwater Worlds

Carinthia in Austria has many great lakes that are perfect for diving. Learn to dive and discover the magical underwater world.
  • Find a Dive Center or Resort
  • Replace Your Certification Card
  • Get Dive Insurance
  • Book a Scuba Vacation
  • Buy Branded Merchandise
  • Download the Mobile App

Inside PADI

  • Who We are
  • The PADI Difference
  • Our History
  • Corporate Responsibility
  • Working at PADI

Corporate Information

  • Company Statistics
  • Press
  • Our Partners
  • Advertise with Us

PADI AWARE

  • AWARE Foundation
  • PADI AWARE FAQs
  • History & Impact
  • Donate

PADI Dive Center & Resorts

  • Why Partner with PADI?
  • Dive Center & Resort Levels
  • Starting Your Own Scuba Business
  • Business Planning Help
  • How Long Does It Take?
  • Become a Retailer or Resort
  • Regional Support
©2026 PADI
Privacy Policy
Accessibility
Copyright
Forms Center
Contact
Aerial view of Colombia coastline

Get Instant Access to a Hidden List of Underwater Gems

Join the community, and you’ll get our list of the off-the-radar dive destinations you’ll want to add to your bucket list.

    By requesting the list you confirm you are at least 16 years old and agree to receive communication, offers and information from PADI. Privacy Policy.

    You Got Access!

    Here’s access to the secret Off-The-Radar Dive Destinations You’ll Want To Add to Your Bucket List.
    And it’s heading its way to your inbox.