We are SEI

Scuba Educators International (SEI) was formed when the YMCA decided to sunset its YScuba program after 50 years of service.  SEI continues this tradition of excellence and quality in providing knowledge and skill-based courses for scuba divers.

SEI is international in scope with instructors in many US states and in numerous countries around the world with corporate offices located in Muncie, Indiana, USA.

SEI is poised to continue growing into a strong, innovative, and dynamic international scuba education program.

"SEI has always considered its students and safety first and foremost; everything else is secondary."
Joe P., SEI Instructor Trainer in PA

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SEI

What WE do​

We are stewards for our underwater environment. Join us on our Journey!

CMAS

SEI is one of only two US organizations to offer dual certifications with CMAS through the Underwater Society of America

CMAS was founded in 1959 and is one of the world's oldest scuba diving organizations.  CMAS is the premier diving program across Europe and throughout much of the world.   According to CMAS its "entry-level training is more extensive, featuring more 'classroom' delivered theory and strives to produce more experienced, knowledgeable and skilled divers." SEI and CMAS believe that quality education emphasising diving safety over profits is most important.