My wife is a Sama (the sea people of Philippines/Malaysia) & I a linguistic worker. When we got married, I managed to switch my works focus towards my wife's tribe. It just so happens that they are expert fishermen. Those handy with spearguns often tend to be quite good freedivers. I've been picking up things as I go along. I bumped into the first freediving instructor in the Philippines & we decided to make a cultural freediving contest. I'm taking up an interest in it now. We'll see if I can ever go below 100 feet.