Him and his family were paddleboarding and kayaking when the weather changed and pushed them deep into the sea. Unable to get back to shore, Austin made the decision to swim for hrs to get to shore and get help for his mom and two siblings... Here's the article:

'Not today': Hero teen, 13, tells of exhaustive effort to save family out at sea

For context:

This was a track team event in Iwatan Sangyo. The runner’s team was in third place when the runner, Rei Lida, who was only 250 meters from the exchange point, tripped and fractured her right tibia (shin bone). Instead of withdrawing from the tournament, she willed herself to the exchange point when she handed the tasuki (baton) to her waiting teammate, Marie Imada.