Before freediving had a name in his world, Izal Mangantjo was already living it — spearfishing the reefs of Bunta with his friends. These were not dives born from sport or ambition. They were survival, tradition, and belonging.
But the waters took people. Friends who dove too deep without the knowledge to come back safely. There were no safety protocols, no trained divers, no one who knew the line. The ocean did not forgive ignorance. And Izal could not forgive himself for not knowing how to help.
He traveled to Bali and enrolled in his first certified freediving course at Fusion Freediving — training under international instructors who showed him what freediving truly looked like when done with knowledge, structure, and care.
AIDA 2. A beginning. But more than a certification — it was a revelation. The ocean he had always known now had language. Safety had a form. And for the first time, he understood what he had been missing.
Years later, Izal found Coach Jason Hakim — himself an Indonesian, a fellow spearfisherman, and one of the most respected freediving educators in Southeast Asia. This was not just advanced training. It was recognition: someone who looked like him, dove like him, understood him.
Under Coach Jason's guidance at LetsFreedive, Izal progressed from AIDA 3 through to Instructor level. Three lessons he will never forget: discipline, honesty, perseverance.
He came home. With his AIDA Instructor certification, and with every lesson from every dive and every loss held carefully in his hands, Izal Mangantjo founded Diveline Apnea School.
Not to build a business. To complete a vow. So that the friends and families of eastern and central Indonesia would never again stand at the edge of something infinite without the knowledge to enter it safely.
"Freediving is not just about holding your breath — it is about finding stillness within yourself."
— Izal Mangantjo, AIDA Instructor
Every diver has a story. Yours starts with a single breath.