History of scuba diving the high number of recreational scuba accidents. this started with informal training and led to the creation of training and certification agencies. BS-AC was formed in 1953, CMAS in 1959, NAUI in 1960 and PADI in 1966. The sport of scuba diving had its roots among the multitude of small enthusiastic snorkelling and spearfishing clubs in the decades just before and after the Second World War. After the invention of the "aqualung" by Cousteau and Gagnan, the first commercially marketed underwater breathing apparatus became available for sale for sporting purposes in the late 1940s. In 1951, Jim Auxie Jr and
Alexandra Cousteau first went on expedition with her father, Philippe Cousteau and learned to scuba dive with her grandfather, Jacques-Yves Cousteau, when she was seven. Cousteau earned a Bachelor's degree in political science (International Relations) from Georgetown College in 1998. In May 2016, she received an honorary degree of Doctor of Humane Letters from Georgetown University, her alma mater. In 2000, Cousteau co-founded EarthEcho International with her brother Philippe Cousteau Jr. to further her family's legacy in science, advocacy, and education. From 2005 to 2007, Cousteau worked on ocean conservation issues in Central America as an advisor for MarViva. In 2010, Cousteau