Equalization

Underwater Equalization

Everything you need to know about equalization and techniques to perfect it, whether for diving or freediving

SDI Advantages from TDI

SDI advantages from TDI

SDI, with its sub-brands TDI, ERDI, and PFI, remains committed to TDI’s original focus on safety and quality.

Are we doing enough to protect Florida’s favorite marine mammal?

New threats to the Florida manatee raise conservation concerns

Are we truly doing enough to ensure the protection and well-being of Florida’s most beloved marine mammal?

Running: a Family of Scuba Divers

Running: a Family of Scuba Divers

Carney and Meany will run in Hires’ honor while raising funds for Team RWB, with donations accepted through SDI’s nonprofit, Clear Currents.

Dive Computers

Dive Computers

Modern dive computers provide a wide range of additional information that can help us make the most of each dive, while making it safer.

Freediving Photography and Marine Conservation

Freediving Photography and Marine Conservation

Freedivers armed with nothing but their breath and underwater cameras are playing a crucial role in ocean conservation.

Wreck Diving

Wreck Diving. Much more than a one or two-day specialty course

We should not be satisfied just with getting certifications; we should put them to good use gaining real experience by diving.

Are you a good dive buddy?

Are you a good dive buddy?

Are you the dive buddy everyone dreams of? Take our fun quiz to find out how you can level up your underwater game!

Solo Diving

solo diving

Solo scuba diving training offers the opportunity to improve our diving abilities by being more self-reliant.

scuba diver on sandy bottom

SDI – One Dive Family

SDI’s One Dive Family, uniting recreational, technical, and public safety diving and freediving with a focus on safety and community.