Looks like this guy tried, although there really isn't much interesting detail there: https://www.indiegogo.com/projects/the-seal-wearable-swim-monitoring-and-d

Looks like this guy tried, although there really isn't much interesting detail there: https://www.indiegogo.com/projects/the-seal-wearable-swim-monitoring-and-drowning-detection-system#/story https://www.indiegogo.com/projects/the-seal-wearable-swim-mo...