Originally Posted by
Salsa dancer
^ Think about it a moment, dumbo.
Like Thais, Koreans are not known for their swimming abilities. Aussies are, since we include its teaching in primary school and often before that.
Snorkeling is easy to pick up but he may not have been as able as a long-term swimmer to exclude water from his pharynx. And that ability is a large part of swimming. It becomes automatic after mucking around in a pool
and the surf for years.
All it takes is a slight accidental inhalation of a tiny bit of water and suddenly the snorkeler is struggling, then inhaling water.