SSI – Scuba Schools International

Founded in the United States of America in 1970, SSI has expanded to include more than 30 Service Centers, is represented in more than 110 countries with over 2,800 International locations, and has materials printed in more than 30 languages. It is now the second largest diving certification agency.

Training offered: Recreational, Technical

Website: https://www.divessi.com/en/home/