About Us

Some Things About Us

SII (Spearfishing Instructors International) is an established global Spearfishing Education Organization; it is the first ever of its kind, specialized, strictly Spearfishing Education Organization, aiming to provide high quality training and education services to spearos around the world.

SII grew out of the passion of a few avid Spearfishing Champions and Freediving Instructors, who are intent on making it possible for anyone to learn how to spearfish. SII addresses to all levels of spearos, from beginner to advanced. Special stages for VIPs, electronic device applications, competitive spearfishing, deep spearfishing, variable weight use etc, are targeting to cover every need of the modern spearfisher who wants to rapidly develop in the sport.

In addition to all existing freediving education programs, most of the teaching and training in SII system Alpha-Omega is open water oriented, emphasizing in real action conditions, on boats and in solid safety due to our recently developed "4-diver" and "total safety" safety protocols.

SII Education Manual is in English, aiming to spearos all around the world. It is a collection of knowledge, training, teaching and spearfishing experience in all three Oceans the last 30 years!

For more details and the dates of the next IC, contact us at: This email address is being protected from spambots. You need JavaScript enabled to view it.

SII is clearly the new name to trust in the Spearfishing World. Max up your skills with us!

What We Do

Who we are

  • Manolis Giankos - Head Education Officer

    Manolis Giankos

    Greek Champion in all Freediving disciplines
    Euro-African Spearfishing Champion for 2013
    Greek National Spearfishing Champion (Individual 2010, 2012, 2013, 2014) (Team 2013)
    SII (Spearfishing Instructors International) Instructor Trainer Certifier
    CMAS *** Hellenic Federation of Underwater Activities & Sportfishing Freediving Instructor Trainer
    CMAS *** Hellenic Federation of Underwater Activities & Sportfishing Spearfishing Instructor Trainer
    Freediving Instructor of APNEA ACADEMY, AIDA International and Free Diving Institute
    CPR, AED & Basic Life Support Instructor